All of the following are true about coronary artery except -
From the left coronary artery, only a single obtuse marginal artery arises.
Right coronary artery lies in right anterior coronary sulcus
Left anterior descending artery is a branch of left coronary artery
Usually 3 obtuse marginal arteries arise from left coronary artery
In 85% cases posterior descending interventricular artery arises from right coronary artery