4. What is NOT TRUE descriptions for promoter and σ factor in E.coli? (A) Base substitution at -35 box will decrease promoter activity of E. coli. (B) Base deletion or insertion between -35 box and -10 box will decrease the promoter activity. (C) -10 box is the transcription start site for RNA transcript. (D) The function of -10 box is similar to that of TATA box of eukaryotic RNAPII promoter.