Which of the following statements is true ?

Question

( A ) $CO_2$ has dipole moment
( B ) $BeCl_2$ has V shape while $SO_2$ is linear
( C ) Hybridisation of the central atom in $NH_3$ and $CH_4$ is $sp^2$
( D ) $SF_6$ is octahedral and $F-S-F$ bond angle is $90^{\circ}$