JEE Main 2021 Physics question

What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of 3? (Given resistivities of iron and copper-nickel alloy wire are 12 cm and 51 cm respectively)

• (A)82 m
• (B)97 mCorrect
• (C)110 m
• (D)90 m