This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Inhibition of placental Alkaline Phosphatase by Phenylalanine is an example of 
Select and explain. 
A. Competitive Inhibition, B. Noncompetitive inhibition, C. Uncompetitive Inhibition, D. Allosteric Inhibition
C: Uncompetitive Inhibition
Answer: C: Uncompetitive Inhibition 
Explanation: Placental (PLAP) and germ-cell (GCAP) alkaline phosphatases are inhibited uncompetitively by L-Leu and L-Phe. Ref: Katzung 12th ed.