Study the given flow chart.
Select the option that correctly identifies X, Y and Z.
| X | Y | Z | |
| A | Knee joint | Shoulder joint | Ankle joint |
| B | Ankle joint | Wrist joint | Elbow joint |
| C | Shoulder joint | Elbow joint | Wrist joint |
| D | Wrist joint | Knee joint | Ankle joint |
easiest one