Thymine Nucleotides Are Not Synthesized Directly by Cells but Indirectly

Multiple Choice

Thymine nucleotides are not synthesized directly by cells but indirectly from other pyrimidine deoxyribonucleotides.Which of these statements is NOT correct regarding thymine nucleotide synthesis?

A) dUMP is the immediate precursor for dTMP.
B) The action of dUTPase allows dUTP to serve as a substrate in DNA synthesis.
C) The methyl donor in the reaction of dTMP is N5,N10-methylene-THF.
D) THF is used as a cofactor.