Using the Informix 4GL Debugger, which sequence of steps accomplishes this?

An end user wants to see how values x and y are being set in function1 and function2, and also needs to know the value of z before function3 is called.

Using the Informix 4GL Debugger, which sequence of steps accomplishes this?
A . set a break point for line 6, execute a call function2, execute a step/step
B . set a break point for line 5, execute a call function1, execute a call function2, execute print z on line 10
C . set a break point for line 5, execute a step into on lines 5 and 6; execute print z on line 9 prior to executing a step/step into/continue
D . set a break point for line 5, execute a step, print x, execute a step, print y, execute print z on line 9 prior to executing a step/step into/continue

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Answer: C