The dentist placed a cast crown on a patient who has an ideal canine guided occlusion. The maximum intercuspal position (MIP) contacts are ideal; however, when the lateral movements were evaluated with an articulating paper, the following smudge marks were noted. The smudge mark labeled a,b,c represents which of the following contacts?

a. Working side
b. Non-working side
c. Protrusive
d. Lateral protrusive