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
Branch of Right Coronary artery -a) Obtuse marginalb) Acute marginalc) Posterior interventriculard) Diagonal 
Select and explain. 
A. ab, B. bc, C. cd, D. ad
B: bc
Answer: B: bc 
Explanation: Branches of Right Coronary artery are
-        Acute marginal
-        Posterior descending/interventricular
-        Infundibular
-        Nodal branch (in 65%)
-        Atrial, anterior and posterior ventricular
 Branches of Left coronary artery are
-        Anterior descending/interventricular
-        Circumflex
-        Left diagonal
-        Obtuse marginal
-        Left conus
-        Nodal (in 35%)
-        Atrial, anterior and posterior ventricular