The calibration data of a thermocouple with its cold junction at 0C are given below. The hot junction of the thermocouple is placed in a bath at 80C, while its cold junction is at 20C. What is the emf of thermocouple ?

A. 2.46 mv

B. 3.26 mv

C. 0.80 mv

D. 2.43 mv

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