At Devlin's trial for burglary, Jaron supported Devlin's alibi that they were fishing together at the time of the crime. On cross-examination, Jaron was asked whether his statement on a credit card application that he had worked for his present employer for the last five years was false. Jaron denied that the statement was false. The prosecutor then calls Wilcox, the manager of the company for which Jaron works, to testify that although Jaron had been first employed five years earlier and is now employed by the company, there had been a three-year period during which he had not been so employed. The testimony of Wilcox is 
admissible, in the judge's discretion, because Jaron's credibility is a fact of major consequence to the case.  admissible, as a matter of right, because Jaron "opened the door" by his denial on cross-examination.  inadmissible, because whether Jaron lied in his application is a matter that cannot be proved by extrinsic evidence.  inadmissible, because the misstatement by Jaron could have been caused by misunderstanding of the application form. 