In Its Attempt to Quash Its Indictment, Ford Argued That

In its attempt to quash its indictment, Ford argued that ex post facto considerations prevented it from being prosecuted. What did Ford mean by this?

A) individual executives, but not a corporation can be tried under Indiana law
B) after Ford had met all existing federal regulatory standards in making the Pinto, a state like Indiana could not then come along at a later date and prosecute the company
C) the conduct for which Ford was indicted (making the Pinto) occurred before the legal statute being used to prosecute the company was passed and made law by the Indiana legislature