This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
Which of the following most accurately describes the transmembrane signalling process involved in the steroid hormone action 
Select and explain. 
A. Action on a membrane spanning tyrosine kinase, B. Action of a G protein which activates or inhibits adenylyl cyclase, C. Diffusion across a membrane and binding to an intracellular receptor, D. Opening of transmembrane Ion channels
C: Diffusion across a membrane and binding to an intracellular receptor
Answer: C: Diffusion across a membrane and binding to an intracellular receptor 
Explanation: Ref-KDT 6/e p51 Steroid hormones and lipids soluble and act on cytoplasmic receptor after crossing the plasma membrane