A winding is distributed in the slots along the air gap periphery. Which of the following statements are true?

[answerhappygod]

(i) to add mechanical strength to the winding
(ii) to reduce the amount of conductor material required
(iii) to reduce the harmonics in generated EMF
(iv) to reduce the size of the machine
(v) for full utilization of iron and conductor materials
a) (i), (iii), (iv), (v)
b) (i), (ii), (iv), (v)
c) (i), (ii), (iii), (v)
d) (i), (iii), (v)