Find the equivalent resistance of the combination of resistors R1 = 42.0 Ohms, R2 = 75.0 Ohms, R3 = 33.0 Ohms, R4 = 61.0 Ohms, R5 = 15.5 Ohms, and R6 = 19.0 Ohms
a) 25.5 Ohms
b) 35.2 Ohms
c) 44.7 Ohms
d) 57.3 Ohms