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The current voltage graph for a given me...

The current voltage graph for a given metallic conductor at two different temperatures `T_1` and `T_2` are as shown in the figure
. Then

A

nothing can be said about `T_1` and `T_2`

B

`T_1 lt T_2`

C

`T_1 gt T_2`

D

`T_1 = T_2`.

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