Assertion (A): In circular waveguide the attenuation of TE01 mode decreases as the operating frequency increases. Reason (R): The wall currents in a circular waveguide in TEQ1 mode are completely circumferential.

• Both A and R are correct and R is correct explanation of A
• Both A and R are correct but R is not correct explanation of A
• A is correct but R is wrong
• A is wrong but R is correct