Solve the Problem $x$ Large Dolls And $y$ Small Dolls Is Given By

Multiple Choice

Solve the problem.
-The total cost to hand-produce $x$ large dolls and $y$ small dolls is given by $C(x, y) =2 x^{2}+5 y^{2}+4 x y+20$ . If a total of 20 dolls must be made, how should production be allocated so that the total cost is minimized?

A) Make 20 large dolls and 0 small ones
B) Make 10 large dolls and 10 small ones
C) Make 0 large dolls and 20 small ones
D) Make 19 large dolls and 1 small one