Which of the Following Is True

Which of the following is true?

A) The independent contractor is not subject to the supervision of the employer.
B) An independent contractor undertakes to enter into a contract with the employer to perform any work required by the employer, and he employee undertakes not to enter into a contract with the employer.
C) An independent contractor undertakes to perform a specified task, and the employee undertakes to carry out any work required of him or her by the employer.
D) An employer is liable for all torts committed by an employee.