If \(\sum^n_{i=1} x_i = 80\) and \(\sum^n_{i=1}x^2_i = 400\), then a possible value of n among the following is

If \(\sum^n_{i=1} x_i = 80\) and \(\sum^n_{i=1}x^2_i = 400\), then

1.	If \(\sum^n_{i=1} x_i = 80\) and \(\sum^n_{i=1}x^2_i = 400\), then a possible value of n among the following is
A.	9
B.	12
C.	15
D.	18
Answer» E.