Which enzyme is responsible for decreasing cytoplasmic calcium concentration during the termination of the phosphoenacitide GPCR signaling pathway?

• A. Protein kinase C.
• B. Inositol Polyphosphate 5 Phosphatase.
• C. Sarcoplasmic endoplasmic reticulum calcium ATPase (SERCA) pump.
• D. Phospholipase C.

Answer: (C)