Which of the Following Provides the Best Conclusion to a Set

Multiple Choice

Which of the following provides the best conclusion to a set of instructions on assembling a toy airplane for children under age 10?

A) Have fun!
B) --End Of Page--
C) Use your toy carefully.
D) The propeller should turn as you roll the airplane's wheels. If the propeller does not turn, make sure the wheel axle is turning the gear on the motor.