Correct Option: A

Liver is the largest gland in human body. It is also the largest (internal) organ in our body and can weigh up to 1.5-1.6 kg for a human adult. The large size of the liver is matched by its functional complexity and involvement in a diverse array of regulatory mechanisms. It plays a major role in regulation of glycogen storage, decomposition of red blood cells, plasma protein synthesis, hormone production, and detoxification.