6C1 + 6C2+ 6C3+6C4+6C5+6C6 = 63.
Preethi has 6 flavors of ice cream in his parlor. How many options are there for Dorathy to pick a one-flavor, two-flavor, three-flavor, four-flavor, five flavor or six flavor order?
A. 26
B. 36
C. 64
D. 67
E. 63