You Have the Assignment of Designing Colour Codes for Different

You have the assignment of designing colour codes for different parts. Three colours are to be used
On each part, but a combination of three colours used for one part cannot be rearranged and used
To identify a different part. This means that if green, yellow and violet were used to identify a
Camshaft, yellow, violet and green (or any other combination of these three colours) could not be
Used to identify a pinion gear. If there are 35 combinations, how many colours were available?

A) 5
B) 7
C) 9
D) 11