Which of the following describes a difference between a warrant and an exchange-traded option? Oa. Warrants unlike exchange-traded options cannot be traded after they have been purchased Ob. The number of exchange-traded options is fixed whereas the number of warrants in existence depends on trading Oc. In a warrant issue the firm is the guarantor while for an exchange-traded option the clearinghouse is the guarantor Od. Exchange-traded options unlike warrants have a single strike price