The alkane that yields two isomeric monobromo derivatives is

Only two isomeric monochloro derivatives are possible for

Only two isomeric monochloro derivatives are possible for

Only two isomeric monochloro derivatives are possible for:

Only two isomeric mono chloro derivatives are possible for

Only two isomeric monochloro derivatives are possible for :

Only two isomeric monochloro derivatives are possible for :

Which one of the isomeric alkanes (molecular formulaL C_(5)H_(12) ) undergo free radial chlorination to yield - (iii) four isomeric monochloro derivatives?