Which one/ones of the following reactions will yield $$2$$-propanol?
(i) $$CH_3CH=CH_2+H_2O\overset{H^+}{\rightarrow}$$
(ii) $$CH_3CHO\overset{(i)CH_3MgI}{\xrightarrow[(ii)H_2O]{}}$$
(iii) $$HCHO\overset{(i) C_2H_5MgI}{\xrightarrow[(ii) H_2O]{}}$$
(iv) $$CH_3CH=CH_2\overset{Neutral KMnO_4}{\rightarrow}$$
Choose the right answer.