Three voltmeters, all having different internal resistances are joined as shown in figure. When some potential difference is applied across A and B, their readings are $$V_1$$, $$V_2$$ and $$V_3$$. Choose the correct option.

A

$$V_1 = V_2$$

B

$$V_1 \neq V_3 - V_2$$

C

$$V_1 + V_2 > V_3$$

D

$$V_1 + V_2 = V_3$$