Which of the following statement is correct

Options

A. `(CH_(3))_(3)COH` is less acidic than `(CH_(3))_(3) `SiOH
B. In trisilyl phosphine `p pi-dpi` back bonding takes place
C. There are two `d pi - p pi` bonds in a `SO_(2)` molecule
D. Fraction of s-character in hybrid orbital around the central atom in `PCl_(4)^(+)` molecule is 0.25

Answer

A, D