This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
What is the action of oxytocin in small doses, when used as intravenous infusion in a full term uterus? 
Select and explain. 
A. Relaxes uterus, B. Induces uterine contractions, C. Causes cervical dilatation, D. All
B: Induces uterine contractions
Answer: B: Induces uterine contractions 
Explanation: Oxytocin increases the force and frequency of uterine contractions. With low doses, full relaxation occurs in between contractions. Ref.Essentials of medical pharmacology TD Tripathi 7th edition page no.329)