Subject: mathqa
Question: at a certain company , each employee has a salary grade s that is at least 1 and at most 5 . each employee receives an hourly wage p , in dollars , determined by the formula p = 11.50 + 0.25 ( s – 1 ) . an employee with a salary grade of 5 receives how many more dollars per hour than an employee with a salary grade of 1 ?
Option: 
A: $ 1.25
B: $ 0.50
C: $ 1.50
D: $ 1.75
Answer: D