What have you learned about the time for telephone calls in many countries?
A.
People are not accustomed to making calls early in the morning.
B.
People would think something unpleasant must have happened if they receive a call early in the morning.
C.
People tend to think the call must be of vital importance if the telephone rings early in the day.
D.
People would feel annoyed if they receive a call while they’re shaving or having breakfast.