Two simple pendulums of lengths $16 l$ and $l$ are in phase at the mean position at a certain time. If $T$ is the time period of shorter pendulum, the minimum time after which they will be again in phase :

Question

( A ) $\frac{4}{3}T$
( B ) $\frac{1}{3}T$
( C ) $\frac{2}{3}T$
( D ) $\frac{3}{2}T$