For the 2N338 transistor, the manufacturer specifies P max =100mW at $$25^\circ C$$ free air temperature and the maximum junction temperature, Tj max = $$125^\circ  C$$. Its thermal resistance is

A

$$10^\circ \frac{C}{W}$$

B

$$100^\circ \frac{C}{W}$$

C

$$1000^\circ \frac{C}{W}$$

D

$$10,000^\circ \frac{C}{W}$$