Which of the Following Is the Sequence of Steps Followed

Which of the following is the sequence of steps followed by biotin-dependent enzymes,as listed below? I.Transfer of the carboxyl group from carboxybiotin to the substrate
II) Activation of bicarbonate by ATP
III) Formation of carboxybiotin

A) I,II,III
B) I,III,II
C) II,I,III
D) II,III,I
E) III,II,I