Which of the Following Is NOT True About the Student's

Which of the following is NOT true about the Student's t distribution?

A) It is bell shaped and symmetrical.
B) It has more area in the tails and less in the centre than does the normal distribution.
C) It is used to construct confidence intervals for the population mean when the population standard deviation is known.
D) As the number of degrees of freedom increases, the t distribution approaches the normal distribution.