Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS)is MOST Likely Caused by Which

Obstructive sleep apnea hypopnea syndrome (OSAHS) is MOST likely caused by which of the following bodily changes?

A) Excess fat accumulation in the neck causing pharyngeal lumen narrowing
B) Excess fat accumulation in the abdomen causing the diaphragm to be elevated
C) Excess fat accumulation in the abdomen restricting chest wall expansion
D) Increased work of breathing due to rapid shallow breathing