Which of the Following Statements Explains Why the Adenine Analog

Which of the following statements explains why the adenine analog, 2-aminopurine (2-AP) , can cause mutations in DNA when it is inserted in place of a site normally occupied by A?

A) 2-AP forms 2 hydrogen bonds with thymine
B) 2-AP undergoes oxidative deaminiation to hypoxanthine which basepairs with C
C) 2-AP can form a single hydrogen bond with C
D) 2-AP is often found as a schiff base that crosslinks with T
E) none of the above