4R1×R2R3R2R3+R1R3+4R1R2
R1R2R3R2R3+R1R2+4R1R2
16R1R2R3R2R3+R1R2+R1R2
4R1R2R34R2R3+R1R2+4R1R2
Correct answer is A
T = 4R2R−11+R−12+4R−13 = 4R21R1+1R2+4R3
= 4R2R2R3+R1R3+4R1R2R1R2R3
= 4R2×R1R2R3R2R3+R1R3+4R1R2
= 4R1×R2R3R2R3+R1R3+4R1R2
T = 4R1×R2R3R2R3+R1R3+4R1R2
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