How Is the Catalytic Proficiency Defined

Multiple Choice

How is the catalytic proficiency defined?

A) It is the reciprocal of the turnover number.
B) It is the logarithm of the Michaelis-Menton constant.
C) It is equal to the rate constants for a reaction in the presence of the enzyme divided by the rate constant for the same reaction in the absence of the enzyme.
D) It is the rate of the enzyme-catalyzed reaction in the presences of a standard concentration of enzyme.