Metaldehyde is the product of the following
A. `4CH_(3)-CHOoverset(Conc.H_(2)SO_(4),0^(@)C)to`
B. `CH_(3)-overset(O)overset(||)C-CH_(3)overset(Conc.H_(2)SO_(4), r o omtemp.)to`
C. `3CH_(3)CHOoverset(Conc.H_(2)SO_(4),ro omtemp.)to`
D. `C_(6)H_(5)-CHO overset("conc.H_(2)SO_(4))to`
