A Project Could Yield a Profit of $1,$2,$3,or $6,with Equal $\sigma$

Multiple Choice

A project could yield a profit of $1,$2,$3,or $6,with equal probability.Then the variance $\sigma$ ²,is:

A) 1.
B) 3/2.
C) 7/2.
D) 9/2.
E) 14.