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B
ATUG
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C
AUTC
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D
AUCG
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Solution
The correct option is D AUCG
The RNA and the DNA molecules are long polymers of the nucleotides. The nucleotide is composed of sugar, phosphate and the nitrogenous base. The nitrogenous base found in the DNA are ATCG. The thiamine is replaced with uracil in the RNA molecule. So, the nitrogenous bases in RNA are AUCG. Adenine and guanine are the purine bases and the uracil and cytosine are the pyrimidine bases in the RNA. The purines are the double ring nitrogenous bases.