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Assertion (A): Transmission of electrical power by dc is economical than that with ac. Reason (R): In case of dc transmission, there is no charging current which contributes to the continuous load, even on no load.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true and R is not the explanation of A

C. A is true but R is false

D. A is false but R is true

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