54. Remdesivir is an FDA approved antiviral treatment for Covid-19. The structure of remdesivir is shown below. Which of the following statement about remdesivir is correct? (A) The structure of this antiviral drug mimics ribonucleotide. (B) It is subjected to phosphorylation to form bioactive bisphosphate in cells. (C) It is a guanine nucleotide analog. (D) It targets DNA-dependent RNA polymerase. (E) It inhibits viral entry.