Mark yelled, " mike and i move this shipment. it's heavy! " which of the following choices correctly identifies the pronoun error in the above sentence? a. an object pronoun is being used where an subject pronoun is needed. b. a pronoun disagrees in number with its antecedent. c. a subject pronoun is being used where an object pronoun is needed. d. a pronoun in the sentence has an unclear antecedent.