Which of the Following Statements Are True

Multiple Choice

Which of the following statements are true?

A) A probability distribution is symmetric (around some point) if the distribution to the left of the point is a mirror image of the distribution to the right of the point.
B) We say a distribution is skewed to the right (or positively skewed) if the "longer tail" is the right tail.
C) We say a distribution is skewed to the left (or negatively skewed) if the "longer tail" is the left tail.
D) All of the above