If the coefficients of $x^3$ and $x^4$ in the expansion of $(1 + ax + bx^2 ) (1 - 2x)^{18}$ in powers of $x$ are both zero, then $(a, b)$ is equal to

Question

( A ) $(14, \frac{272}{3})$
( B ) $(16, \frac{272}{3})$
( C ) $(16, \frac{251}{3})$
( D ) $(14, \frac{251}{3})$