Samson and Delilah are high fashion hair stylists who worked for Philistines Inc., a large chain of hair salons, for $6$ years. They incorporated Haaiir Inc. $2$ years ago and each own $50\%$ of all of the one class of issued shares. They are the only employees of Haaiir Inc. and the corporation's only revenues are from work done for Philistines Inc. What type of income is Haaiir Inc. earning?

A$.$ active business income

B$.$ income from a Specified investment business

C$.$ income from a Personal services business

D$.$ manufacturing and processing income