A neutral compound ‘X’  $\left(C_5{H}_{12}O\right)$ on heating in aqueous acid under pressure gives two compounds,  $B\left(C{H}_{4}O\right)$ and  $C\left(C_4{H}_{10}O\right)$ both B and C evolve hydrogen with active metal sodium. ‘B’ on heating with salicylic acid in Conc. $H_{2}S{O}_4$, gives oil of winter green, a methyl ester. Whereas ‘C’ can give positive iodoform test and give compound ‘D’ $\left(C_3{H}_5{O}_{2}Na\right)$. While ‘D’ on distillation with soda –lime gives ethane. How many of the following statements are CORRECT

1) ‘X’ is 2 – methoxy butane 
2) ‘B’ forming oil of winter green is example of esterification
3) 4 moles of iodine are involved in the conversion of one mole of ‘C’ to form iodoform. 
4) Number of oxygen atoms in salicylic acid and oil of winter green is same.