Answer is D is correct. There is no maximum limit in shia law regarding payment of dower. Therefore option (d) is the correct answer.

Answer is B is correct. In the absence of agreement to pay dower whole of the dower to be paid by the husband to his wife whereas in sunni law only reasonable amount to be paid. Therefore option (b) is the correct answer.

Answer is B is correct. This statement was given by Ameer Ali. Therefore option (b) is the correct answer.

Answer is C is correct. Under Sunni Law marriage with a woman undergoing iddat is fasid and not batil. Therefore option (c) is the correct answer.

Answer is C is correct. There is no particular form in which the ijab and qabool should be made and it can be either in writing orally. Therefore option (c) is the correct answer.