The Probability Distribution of All Possible Values of the Sample $\bar { p }$

The probability distribution of all possible values of the sample proportion $\bar { p }$ is the

A) probability density function of $\bar { p }$ .
B) sampling distribution of $\bar { x }$ .
C) same as $\bar { p }$ , since it considers all possible values of the sample proportion.
D) sampling distribution of $\bar { p }$ .