Solve the Problem $f ( x ) = 0.95 \llbracket x \rrbracket$

Multiple Choice

Solve the problem.
-Sam Wright wants to stock up on cans of cat food which are selling for $0.95 per can. Write a greatest integer function that represents the number of cans he can purchase with x dollars.

A) $f ( x ) = 0.95 \llbracket x \rrbracket$
B) $f ( x ) = \llbracket 0.95 x \rrbracket$
C) $f ( x ) = \llbracket \frac { x } { 0.95 } \rrbracket$
D) $f ( x ) = \frac { \llbracket x \rrbracket } { 0.95 }$