The slope of Arrhenius Plot (lnK v/s 1/T...

The slope of Arrhenius Plot (lnK v/s 1/T) of 1st order reaction is -5x`10^3`K. The value of `E_a` of the reaction is.

A

`166KJmol^(-1)`

B

`-83KJmol^(-1)`

C

`41.5KJmol^(-1)`

D

`83.0KJmol^(-1)`

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