According to question Need to check each and every option here it is :
91
$$91\ \ \ \frac{\ 3}{ }=3.33$$
$$91\ \ \ \frac{\ 7}{ }=13$$
96
$$96\ \ \ \frac{\ 3}{ }=32$$
$$96\ \ \ \frac{\ 7}{ }=94.7$$
63
$$63\ \ \frac{\ 3}{ }=21$$
$$63\ \ \frac{\ 7}{ }=9$$
84
$$84\ \frac{\ 3}{ }=26$$
$$84\ \frac{\ 7}{ }=12$$
According to this first 2 option is wrong and in last 2 option . Hence, Option D is the correct answer.
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