This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
GLUT 4 Receptors are primarily found in which tissues(2018) 
Select and explain. 
A. Brain, red blood cells, B. Neurones and placenta, C. Liver, kidney, ileum, D. Skeletal muscle, fat and cardiac tissue
D: Skeletal muscle, fat and cardiac tissue
Answer: D: Skeletal muscle, fat and cardiac tissue 
Explanation: None