This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Which one of the following sensory receptors is found in epidermisa) Merkel discb) Meissner's corpusclesc) Ruffini endingd) Pacinian corpuscles 
Select and explain. 
A. ac, B. ab, C. ad, D. bc
B: ab
Answer: B: ab 
Explanation: Touch receptors
-        Epidermis and papillary layer of dermis- Meissner’s corpuscles & Merkel’s disc
Dermis and subcutaneous tissue- Pacinian corpuscle and Ruffini’s end organ