Refer to the exhibit.

Which two statements about the network diagram are true? (Choose two.)
Select all that apply, then click Submit answer.
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The subnet address of PC-B has 18 bits dedicated to the network portion.
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One of the routers has two connected serial interfaces.
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R1 and R3 are in the same subnet.
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PC-A and PC-B are in the same subnet.
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The subnet of PC-C can contain 256 hosts.