What would be the reactant and reagent used to obtain 2,. 4-dimethyl pentan-3-oI?
(a) Propanal and propyl magnesium bromide
(b) 3-methylbutanal and 2-methyl magnesium
(c) 2-dimethylpropanone and methyl magnesium iodide
(d) 2- methylpropanal and isopropyl magnesium iodide
