If the Random Variable X Is Exponentially Distributed, Then Which $X$

Multiple Choice

If the random variable X is exponentially distributed, then which of the following statements best describes the mean of X?

A) The mean of $X$ will be greater than the standard deviation of $X$ .
B) The mean of $X$ will be smaller than the standard deviation of $X$ .
C) The mean of $X$ will equal the standard deviati on of $X$ .
D) None of these choices are correct.