Unlike DNA, Which Has One Primary Form, RNA Has Several

Unlike DNA, which has one primary form, RNA has several different forms. What is the role of transfer RNA ?

A) It moves between the nucleus and the cytoplasm carrying genetic information for protein synthesis.
B) It sends chemical signals between cells via surface proteins.
C) It binds other RNA molecules while replicating DNA.
D) It carries amino acids to be covalently bonded together to make proteins.
E) None of the above