3. You are wondering whether the expression of the gene you are studying is regulated by miRNAs. Which of the following experiments is least likely to help you determine if miRNAs are involved? (A) Look for sequences in the UTR regions that may complement miRNAs (B) Delete miRNA that may regulate your gene and examine expression level changes (C) Mutate potential miRNA binding sites to see if expression levels of gene changes (D) Use a phospho-specific antibody to examine protein expression levels