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: Orthopaedics
Superficial heat therapy among the following 
Select and explain. 
A. Infrared lamp, B. Microwave diathermy, C. Ultrasonic therapy, D. Shortwave diathermy
A: Infrared lamp
Answer: A: Infrared lamp 
Explanation: None