Answer:
The correct answer is: Yes, Bob is committing fraud against the firm.
Explanation:
If a memo is issued by a company, it is because one of the firm's regulations is being breached. In the example, Bob received a memo because he was using a corporate credit card for casual meal expenses. He was even paying his girlfriend's meals with that corporate card. However, Bob is not paying much attention to the company's notifications under the excuse that he is an intern but, whether he is officially an employee or not yet, he is committing fraud against the firm.