​ Select the answer with parallel structure.
A.
Routine locker checks at high schools expose illegal​ weapons, hidden​ drugs, and there are some pictures of friends.
B.
Routine locker checks at high schools expose illegal​ weapons, drugs, and pictures.
C.
Routine locker checks at high schools expose illegal​ weapons, hidden​ drugs, and some kids have pictures.
D.
Routine locker checks at high schools expose​ guns, some​ drugs, and they hang pictures of friends.