B.Two resistors of resistanceR5= 3.00andR6= 3.00are added to the network, and an additional resistor of resistanceR7= 3.00is connected by a switch, as shown in the diagram..(Figure 2)Find the equivalent resistanceRBof the new resistor network when the switch is open. Express your answer in ohms.

C. Find the equivalent resistanceRCof the resistor network described in Part B when the switch is closed. Express your answer in ohms.