Two Identical Storage Batteries Are Connected in Series, the Positive

Multiple Choice

Two identical storage batteries are connected in series, the positive terminal of the first battery to the positive terminal of the second; then they are placed in a circuit. The combination will provide

A) no difference in potential.
B) twice the difference in potential and half the total charge provided by one battery.
C) twice the difference in potential and the same total charge as provided by one battery.
D) the same difference in potential and half the total charge provided by one battery.
E) the same difference in potential and twice the total charge provided by one battery.