(A) The monochlorination of 1,1-dichloropropane produces four trichloro products, at least one of the trichloro product is optically active.
(B) 1,2-dichloropropane is optically active. The monochlorination of 1,2-dichloropropane produces four trichloro products, atleast one of the trichloro product is optically active.
(C) The monochlorination of 1,3-dichloropropane produces two trichloro products.
(D) The monochlorination of 2,2-dichloropropane produces only one trichloro product.
(E) The monochlorination of 2,3-dichloro-2,3-dimethyl butane produces two trichloro products. At least one of the trichloro product is optically active.