Consider the Following to Answer the Question(s) Below

Consider the following to answer the question(s) below:
A walk-in medical clinic believes that arrivals are uniformly distributed over weekdays (Monday through Friday) . It has collected the following data based on a random sample of 100 days.

-How many degrees of freedom are appropriate to test that arrivals are uniformly distributed?

A) 4
B) 100
C) 5
D) 6
E) 99