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: 
Select and explain. 
A. Brain, red blood cells, B. Liver, Kidney, Ileum, C. Neurones and placenta, D. Skeletal muscle, fat and cardiac tissue
D: Skeletal muscle, fat and cardiac tissue
Answer: D: Skeletal muscle, fat and cardiac tissue 
Explanation: GLUT 4 receptors are primarily found in skeletal muscle, fat and cardiac tissue. Q Which GLUT is characteristically found in placenta GLUT 3 Q Which GLUT is characteristically a fructose transpoer GLUT 5 Q Blood to brain glucose transpo facilitated by GLUT 1 Q Main insulin responsive glucose transpoer is GLUT 4 Ref: Harper 30th edition Pgno: 191