"P" is a hydrocarbon of molecular formula: $$C_8H_{14}$$. On ozonolysis, "P" forms "Q". "Q" on treatment with alkali under reflux condition produces "R", which on treatment with $$I_2$$/NaOH gives a yellow precipitate. Acidification of the solution gives "S". The structure of "S" is given below:-

The correct structure of "P" is

A

B

C

D