Which Is NOT True of Sterol Regulatory Element-Binding Protein (SREBP)

Which is NOT true of sterol regulatory element-binding protein (SREBP) ?

A) It is activated differently from most transcription factors
B) At low sterol hormone levels, it is bound to proteins in the ER membrane
C) One of its binding proteins acts as a sterol sensor
D) Still within the endomembrane system, its DNA binding domain is cleaved by proteases
E) Following translocation to the nucleus, it alters transcription