Which of the following is NOT a way a defendant can avoid liability under the 1933 act?a. The statement or omission was not material. b. The plaintiff and the defendant conspired to save the company. c. The plaintiff knew about the misrepresentation at the time of purchasing the stock. d. The defendant exercised due diligence in preparing the registration and reasonably believed at the time that the statements were true and there were no omissions of material facts.