The correct statements among $(a)$ to $(d)$ are:
$(a)$ Saline hydrides produce $H_2$ gas when reacted with $H_2O$.
$(b)$ Reaction of $LiAlH_4$ with $BF_3$ leads to $B_2H_6$.
$(c)$ $PH_3$ and $CH_4$ are electron-rich and electron-precise hydrides,respectively.
$(d)$ $HF$ and $CH_4$ are called as molecular hydrides.

• A
  $(c)$ and $(d)$ only
• B
  $(a), (b)$ and $(c)$ only
• C
  $(a), (b), (c)$ and $(d)$
• D
  $(a), (c)$ and $(d)$ only