Read the following statements carefully ...

Read the following statements carefully Y : The resistivity of a semiconductor decreases with increase of temperature Z : In a conducting solid, rate of collisions between free electrons and ions increases with increase to temperature. Select the correct statement(s) from the following :

A

Y is true but Z is false

B

Y is false but Z is true

C

both Y and Z are true

D

Y is true and Z is the correct reason for Y.

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