A long solenoid of length $$2\,\text{m}$$ and radius $$10\,\text{cm}$$ having $$2000$$ turns per meter carries a current of $$1.0\,\text{A}$$. The strength of magnetic field $$B$$ is maximum at point

A

A at the left end

B

C at the right end

C

O at the centre of solenoid

D

P outside the solenoid