A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R which undergoes intramolecular aldol reaction to give predominantly S. P underset(underset(3.H_(2)SO_(4),Delta)(2. H^(+), H_(2)O))overset(1."MeMgBr")(rarr) "Q " underset(2.Zn,H_(2)O)overset(1.O_(3))(rarr)" R "underset(2.Delta)overset(1. OH^(-))(rarr)S

A carbonyl compound P, which gives positive iodoform test, undergoes r

1.	A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R which undergoes intramolecular aldol reaction to give predominantly S. P underset(underset(3.H_(2)SO_(4),Delta)(2. H^(+), H_(2)O))overset(1."MeMgBr")(rarr) "Q " underset(2.Zn,H_(2)O)overset(1.O_(3))(rarr)" R "underset(2.Delta)overset(1. OH^(-))(rarr)S
Answer» ANSWER :A