While dimensioning a cylinder in the view where the true shape of the cylinder is not visible, which symbol is used to denote that it is a cylinder?

While dimensioning a cylinder in the view where the true shape of the

1.	While dimensioning a cylinder in the view where the true shape of the cylinder is not visible, which symbol is used to denote that it is a cylinder?
A.	•
B.	φ
C.	ϴ
D.	○
Answer» C. ϴ