What Was the Importance of Mendel Performing Reciprocal Crosses

What was the importance of Mendel performing reciprocal crosses?

A) To be able to breed plants all year round
B) To obtain enough plants to perform the experiments that Mendel wanted, which would not have been sufficient without performing reciprocal crosses
C) To disprove a hypothesis at the time the experiments were performed that stated the ovum carried all the information for progeny
D) To demonstrate that the inheritance of a trait was not dependent on which parent carried the trait