A survey found that 5% of adults have not visited a dentist in the last five years. Suppose you ask 50 adults selected at random if they have visited a dentist in the last five years. Should a normal distribution be used to approximate the distribution of the random variable x that counts the number of adults who have not visited a dentist in the last five years?

A Yes; since np5 and nq5, the normal distribution can be used.

B Yes; since np <5 and nq <5, the normal distribution can be used.

C No; since np <5, the normal distribution should not be used.

D No; since nq<5, the normal distribution should not be used.