Please choose the correct solution to the question: How to strengthen arms.

Solution1: Place your hands above your shoulders with your arms fully extended, palms flat and fingers facing forward. Legs are straight and knees are off the floor. Lower yourself by bending your elbows out to the sides until your chest is about 2 inches above the floor. Push back up and repeat 10 to 15 times.

Solution2: Place your hands underneath your shoulders with your arms fully extended, palms flat and fingers facing forward. Legs are straight and knees are off the floor. Lower yourself by bending your elbows out to the sides until your chest is about 2 inches above the floor. Push back up and repeat 10 to 15 times.

Answer format: solution1/solution2
Answer: solution2