If an Individual's Utility Function Is Given By $U ( x , y ) = \sqrt { x y }$

Multiple Choice

If an individual's utility function is given by $U ( x , y ) = \sqrt { x y }$ and I = 100, p_x = 1,p_y = 4,his or her preferred consumption bundle will be:

A) (20,20) .
B) (50,12.5) .
C) (40,15) .
D) (30,15) .