Rab is the resistance between the terminals A and B, Rbc between B and C and Rca between C and A. These 3 resistors are connected in delta connection. After transforming to star, the resistance at B will be?

Rab is the resistance between the terminals A and B, Rbc between B and

1.	Rab is the resistance between the terminals A and B, Rbc between B and C and Rca between C and A. These 3 resistors are connected in delta connection. After transforming to star, the resistance at B will be?
A.	Rac/(Rab+Rbc+Rca)
B.	Rab/(Rab+Rbc+Rca)
C.	Rbc*Rab/(Rab+Rbc+Rca)
D.	Rab/(Rab+Rbc+Rca)
Answer» D. Rab/(Rab+Rbc+Rca)