The Population of All Sample Proportions Has an Approximately Normal

The population of all sample proportions has an approximately normal distribution if the sample size (n) is sufficiently large.The rule of thumb for ensuring that n is sufficiently large is:

A) np ≥ 5
B) n(1 - p) ≥ 5
C) np ≤ 5
D) n(1 - p) ≤ 5 and np ≤ 5
E) np ≥ 5 and n(1 - p) ≥ 5