The Parents of an 18-Month-Old Girl Are Alarmed at

The parents of an 18-month-old girl are alarmed at
The rapid deterioration in her motor skills and the
Appearance of an engorged belly. They note that
When their daughter tries to follow the movement of an object she thrusts her head in the direction of movement as if she cannot move her eyes from side-to-side. Physical and laboratory examination reveals hepatosplenomegaly, skeletal lesions, dry scaly skin, and lipid-laden foam cells that have the appearance of wrinkled paper when viewed under a microscope. Given the observed symptoms in this patient, which of the following is the most likely class of lipid to be found at elevated levels within the lipid-laden foam cells?

A) ganglioside
B) omega fatty acid
C) phospholipid
D) sphingomyelin
E) triglyceride