Joseph's Utility Function Is Given by X_A + 2x_B, Where

Joseph's utility function is given by x_A + 2x_B, where x_A denotes his consumption of apples and x_B his consumption of bananas. Suppose a banana cost 50 cents and an apple costs also 50 cents. If his income is $10, then his consumption bundle (x_A,x_B) is:

A) (20,40) .
B) (20,20) .
C) (0,20) .
D) (20,0) .