Which of the following contains a vague pronoun reference?

 - Ted sent them the transcript from his old college, but he still wasn't granted an exemption from English 101.
 - Ted sent the registrar's office the transcript from his old college, but he still wasn't granted an exemption from English 101.
The first answer choice contains a vague pronoun reference. The pronoun them is used without its antecedent.
The second answer choice shows a possible correction for the vague pronoun reference. Them has been replaced with the registrar's office.
Ted sent the registrar's office the transcript from his old college, but he still wasn't granted an exemption from English 101.