Answer:
D
Step-by-step explanation:
Barbell curls and dips both are arm exercise to decrease the weight of arm and muscles
This is perform by the flexing of both elbows and keeping your shoulder bone withdrew
Do not allow heavy weight from lower back to arch and push up to about chest level
Keep the spine in zero potential position
Determine the width of grip and your elbow to ought the potential position of exercise
Hence the right answer is option D "they are both arm exercise"