Consider the given reaction, identify the major product P.
CH3 - COOH\(\rm \xrightarrow[\text { (iv) } {H}_2 \mathrm{O} / \bar{{O} }H, \Delta]{\text { (i) } {LiAlH}_4 \text { (ii) } {PCC} \text { (iii) } {HCN} / \bar{{O} }H}\)"P"
1
CH3 – CH2 – CH2 – OH
2
3
4