Which of the Following Correctly Describes the Sign Test

Multiple Choice

Which of the following correctly describes the sign test?

A) It often uses the directions of differences observed in matched-pairs sample to determine whether the relative frequency distributions of two statistical populations are identical to or different from one another.
B) It is often used to determine whether a sample comes from a population with a specified median.
C) It is often used to determine whether a sample comes from a population with a specified mean.
D) Both it often uses the directions of differences observed in matched-pairs sample to determine whether the relative frequency distributions of two statistical populations are identical to or different from one another and it is often used to determine whether a sample comes from a population with a specified median.
E) Neither it often uses the directions of differences observed in matched-pairs sample to determine whether the relative frequency distributions of two statistical populations are identical to or different from one another nor it is often used to determine whether a sample comes from a population with a specified median.