[单选题]
16.33 Given the configuration of 0zhz 3t3vhl6j)mn 5pz 0/ zrl*lj-yb athree cha 7j5e nyy0si9qrges, +Q, +Q, and −2Q, which one of the following choices best represents the direction of the electric field at the point P and the sign of the electric pote iyq5e9ynjs07 ntial at P from these charges?
