Comparing the bacterial CRISPR system and the eukaryotic RNAi mediated by siRNAs, indicate whether each of the following CRISPR components is most analogous to Argonaute (A), siRNA (S), or target mRNA (T) in the RNAi pathway. Your answer would be a three-letter string composed of letter A, S, and T only. ( ) Cas ( ) Viral DNA ( ) crRNA