Ambrose has the utility function U(x,x)=4x1/2+y where x measures the number of nuts and y measures the number of berries. If Ambrose is initially consuming 64 units of nuts and 10 units of berries, then what is the largest number of berries that he would be willing to give up in return for an additional 17 units of nuts?

Group of answer choices

4

6

42

1/4

None of the above.