Why Is Specific Performance or Reinstatement Rarely an Option Provided

Why is specific performance or reinstatement rarely an option provided by the courts to an employee claiming wrongful termination from a position in the non unionized sector?

A) Employment standards tribunals award these remedies.
B) Courts are reluctant to interfere with business decisions.
C) Litigation is a slow process,and the employee has a duty to mitigate losses.
D) Common law views the employment relationship as irreparably damaged.