11. Vat 1, Vat 2, and Vat 3, when full, each hold the same amount of water. At the present time, Vat 1 is full, Vat 2 is full, and Vat 3 is full. Water will be transferred between the vats so that each of the 3 vats contains the same amount of water. After the transfer, each of the 3 vats will be what fraction full?

A.

B.

C.

D.

E.