Which of the following is a substrate specific enzymet?

Q. Which of the following is a substrate specific enzymet?
A. Hexokinase
B. Decarboxylase
C. Thiokinase
D. Lactase
Answer: Lactase

A. Hexokinase
B. Decarboxylase
C. Thiokinase
D. Lactase
Answer: Lactase