Evaluate the impact of structural differences between sphingomyelin and gangliosides on their cellular functions.

• A. Gangliosides' simple structure limits their function compared to sphingomyelin.
• B. Both sphingomyelin and gangliosides have similar functions due to their structural similarities.
• C. Sphingomyelin's phosphocholine head group aids in membrane signaling, while gangliosides' complex sugars enhance cell recognition.
• D. Sphingomyelin's structure decreases its ability to interact with proteins compared to gangliosides.

Answer: (C)