How do you solve this?

Which of the following lists the number of points at which a number of points can intersect a triangle?

A)2 and 6 only
B)2, 4 and 6 only
C)1, 2, 3 and 6 only
D)1, 2, 3, 4 and 6 only
E)1, 2, 3, 4, 5 and 6