Exam get endpoints shows correct answer for questions

[JeronimoMendes]

Describe the error
When generating an exam, the response comes with all the questions, and each question comes with the possible answers, inside the answers there's a boolean field telling if the answer is correct or wrong

To Reproduce
Generate an exam and check the network tab on dev tools

Additional context
Example of the response

{
    "id": ...,
    "questions": [
        {
           ...
            "answer": [
                {
                    "id": 25,
                    "text": "910",
                    "correct": true
                },
                {
                    "id": 26,
                    "text": "455",
                    "correct": false
                },
                {
                    "id": 27,
                    "text": "700",
                    "correct": false
                },
                {
                    "id": 28,
                    "text": "210",
                    "correct": false
                }
            ],
           ...
        },
        {
           ...
            "answer": [
                {
                    "id": 45,
                    "text": "As abcissas dos pontos $A$ e $B$ são respetivamente $\\frac{2}{3}$ e  $\\frac{-1}{3}$.",
                    "correct": true
                },
                {
                    "id": 46,
                    "text": "As abcissas dos pontos $A$ e $B$ são respetivamente $0$ e  $\\frac{-1}{3}$.",
                    "correct": false
                },
                {
                    "id": 47,
                    "text": "As abcissas dos pontos $A$ e $B$ são respetivamente $\\frac{-1}{3}$ e  $\\frac{2}{3}$.",
                    "correct": false
                },
                {
                    "id": 48,
                    "text": "As abcissas dos pontos $A$ e $B$ são respetivamente $\\frac{1}{3}$ e  $\\frac{-1}{3}$.",
                    "correct": false
                }
            ],
           ...
        },
       ...
}