Clarence works at least 5 hours but not more than 7 hours. he earns $11.60 per hour. the function f(t)=11.6tf(t)=11.6t represents the amount of money he earns for working t hours.
what is the practical range of the function?

a: all multiples of 11.6 between 58 and 81.2, inclusive

b: all real numbers from 5 to 7, inclusive

c: all real numbers

d: all real numbers from 58 to 81.2, inclusive