CAP Is Said to Be Responsible for Positive Regulation of the Lac

Multiple Choice

CAP is said to be responsible for positive regulation of the lac operon because:

A) CAP binds cAMP.
B) CAP binds the CAP binding site.
C) CAP prevents binding of the repressor to the operator.
D) CAP bound to the CAP binding site increases the frequency of transcription initiation by RNA polymerase.