The part of a derrick crane include
(i) Mast
(ii) Boom
(iii) Bull wheel
(iv) Jack
which of these statements are correct?
A. (i), (ii) and (iv) are correct
B. (ii), (iii) and (iv) are correct
C. (i), (iii) and (iv) are correct
D. (i), (ii) and (iii) are correct
Answer: Option D

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