This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Digastric muscles are the following except 
Select and explain. 
A. Occipitofrontalis, B. Sternocleidomastoid, C. Omohyoid, D. Muscular fibers in the ligament of treitz
B: Sternocleidomastoid
Answer: B: Sternocleidomastoid 
Explanation: Sternocleidomastoid is a muscle with two heads and one belly like the biceps brachiii Digastric muscles have two bellies Occipitofrontalis muscle has two bellies: Occipital belly and Frontal belly Omohyoid superior and inferior belly Ligament of Treitz is a digastric muscle with a skeletal muscle belly, which arises from the left crus of diaphragm and a smooth muscle belly which arises from the duodeno - jejunal junction. It has an intermediate tendon attaching to the connective tissue around the celiac trunk of aoa. Ref: Gray's39e/p185-210