This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
The interior of right atrium is partially divided into two parts by - 
Select and explain. 
A. Crista terminalis, B. Musculi pectinati, C. Fossa ovalis, D. Sinus venarum cavarum
A: Crista terminalis
Answer: A: Crista terminalis 
Explanation: Right atrium is divided into rough anterior and smooth posterior parts by crista terminalis.