Consider the following statements about rebarring in reinforced cement concrete (RCC) structures:

i. 'Rebarring' is the act of placing new bars on top of old, already placed ones.

ii. Stainless steel, carbon steel, and epoxy-coated bars are all common materials for rebar.

iii. Rebarring mitigates the requirement for supplementary reinforcing steel within the RCC structure.

Which of the following statements is/are correct?