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In evolutionary history which of the following rose 1^st?

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In evolutionary history which of the following rose 1^st?

(a) DNA

(b) RNA

(c) Protein

(d) Oxygenic mode of respiration

I had been asked this question during an online interview.

Enquiry is from Ribosome as Ribozyme in portion Gene Expression : Translation of Cytogenetics

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The correct choice is (b) RNA

The explanation: RNA was the 1^st to arise which served both as information storage and as enzyme namely ribozyme. Later it transferred the activities to more specific molecules namely DNA and protein respectively.

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