The Resistivity of a Metal at Room Temperature Is 2 $\varOmega$

The resistivity of a metal at room temperature is 2.35 * 10^-8 $\varOmega$ *m.When the same metal is 150 ^$\circ$ C above room temperature,its resistivity is 4.55 * 10^-8 $\varOmega$ *m.What is the temperature coefficient for this metal?

A) 5.38 * 10^-3/K.
B) 3.98 * 10^-3/K.
C) 2.64 * 10^-3/K.
D) 6.24 *10^-3/K.
E) 7.15 * 10^-3/K.