During the Posttranscriptional Processing of Pre-MRNA, a 5' Cap Is

Multiple Choice

During the posttranscriptional processing of pre-mRNA, a 5' cap is added to an mRNA in step-by-step manner. Which of the following reasons prevents the 5'capping process, involving methylation, from occurring on a DNA strand?

A) lack of an OH group on the 2' carbon of the deoxyribose
B) lack of an OH group on the 3' carbon of the deoxyribose
C) lack of a uracil nitrogenous base on the DNA strand
D) lack of GTP hydrolysis associated with DNA transcription
E) lack of a H on the 4' carbon of the deoxyribose