What Type of Regulatory Transcription Factor Binds DNA in Order

Multiple Choice

What type of regulatory transcription factor binds DNA in order to increases the transcription of a gene?

A) a repressor exerting negative control
B) a repressor exerting positive control
C) an activator exerting negative control
D) an activator exerting positive control
E) a combination of both a repressor and activator exerting negative control