Mike Is a Businessman in the State of Lakaster, United

Mike is a businessman in the state of Lakaster, United States. He is worried that his business rivals might murder him, and so, he decides to purchase a revolver in order to defend himself. When he approaches a licensed firearms dealer to apply for the privilege of owning a firearm, he is informed that the process includes a thorough background check by the FBI. Which of the following, if true, is most likely to cause the FBI to prohibit Mike from purchasing the revolver?

A) Mike has worked with the FBI in the past.
B) Mike has a history of felony conviction.
C) Mike has purchased a licensed firearm in the past.
D) Mike has faced significant losses in his business.