When 20g of a compound (A) `(M.F. = C_(4)H_(10)O_(4))` reacts with excess of `CH_(3)MgBr`, 14.6 L of `CH_(4)` is obtained at STP. What is structure formula of (A) ?
A. `{:(CH_(2)-OH),("|"),((CH-OH)_(2)),("|"),(CH_(2)-OH):}`
B. `{:(" "CH_(2)OH),(" |"),(HO-CH_(2)-C-CH_(2)OH),(" |"),(" "OH):}`
C.
D. Both (a) & (b)