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Which of the following statement is correct ? | |
A. | A parallel sunk key is a taperless key [Wrong Answer] |
B. | A parallel sunk key may be rectangular or square in cross-section [Wrong Answer] |
C. | A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft [Wrong Answer] |
D. | all of the above [Correct Answer] |