Which of these statements are correct regarding the design of distributed armature winding in a 3-phase alternator?

[answerhappygod]

(i) it reduces the phase-belt harmonics
(ii) it increases the utilization of the armature iron and copper
(iii) it increases rigidity and mechanical strength of the winding
(iv) it reduces copper in the overhang of the winding
a) (i), (iii), (iv)
b) (ii), (iii), (iv)
c) (i), (ii), (iii)
d) (i), (ii), (iii), (iv)