The correct sequence of attachment of sugar, base and phosphoric acid in a nucleic acid is

(A) Formation of phosphodiester linkage
(B) Attachment of base to 1' position of sugar
(C) Selection of appropriate base and sugar
(D) Attachment of phosphoric acid

Choose the correct answer from the options given below:

(C), (B), (D), (A)

The correct answer is Option (1) → (C), (B), (D), (A)

(C) Arrange components: Select the correct sugar (deoxyribose for DNA, ribose for RNA) and base (A, T, C, G, or U). 

(B) Make nucleoside: Attach the base to the 1' carbon of sugar.

(D) Make nucleotide: Add the phosphate group (from phosphoric acid) to the 5' carbon of the sugar.

(A) Make chain: Link the phosphate group of one nucleotide (at its 5' position) to the 3' carbon of the next nucleotide's sugar by a phosphodiester bond.