Software coupling involves dependencies among pieces of software called modules. Which of the following are correct statements with respect to module coupling?P: Common coupling occurs when two modules share the same global data.Q: Control coupling occurs when modules share a composite data structure and use only parts of it.R: Content coupling occurs when one module modifies or relies on the internal working of another module.Choose the correct answer from the code given below:

• A. P and Q only
• B. P and R only
• C. Q and R only
• D. All of P, Q and R