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Assertion A): If the frequencies are in the microwave range, H, Y, and Z parameters can not be measured.Reason R): Short and open circuits are difficult to achieve over a broad band of frequencies and active devices such as power transistors and tunnel diodes, frequently will not have stability for a short or open circuit.Choose the correct answer:

A. Both A) and R) are true and R) is the correct explanation of A)
B. Both A) and R) are true, but R) is not the correct explanation of A)
C. is true, but R) is false
D. is false, but R) is true
Answer» C. is true, but R) is false


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