Which Statement Regarding Lysosomal Storage Diseases Is True

Which statement regarding lysosomal storage diseases is true?

A) A gene defect makes lysosomes unable to store degraded compounds.
B) Accumulation of stored iron results in cell, tissue, and organ dysfunction.
C) Defective enzymes result in the accumulation of potentially toxic substances.
D) Mutations in the genes coding for different types of collagen produce substances that are toxic to brain cells.