3.65gm equimole mixture of `NaOH` and `Na_(2)CO_(3)` is titrated against `0.1M HCl` using phenolphathalein as an indicator, `V_(1)mL` of acid was required to reach end point. In another experiment `3.65gm` of same mixture is titrated against 0.2M HCl using methyl orange as an indicator, `V_(2)mL` of acid was required to reach end point. `V_(1)+V_(2)` is :
A. 875mL
B. 750mL
C. 500mL
D. 1000mL
