An investigator has made a solenoid by wrapping 100 turns of wire on a tube that is 10 cm long and 2 cm in diameter. The power supply is providing as much current as it can, but a stronger field is needed, so the solenoid must be rewrapped. Which of the following will result in a stronger field?

A. Wrapping 100 turns of wire on a tube that is 20 cm long and 2 cm in diameter.

B. Wrapping 100 turns of wire on a tube that is I 0 cm long and 1 cm in diameter.

C. Wrapping 100 turns of wire on a tube that is 5 cm long and 2 cm in diameter.