The following function describes the number of employees working at a company, in thousands, where t represents the number of years since the company revised the benefits package. f(t)=1.5(.90)^t select the correct statement.
a. the number of employees is increasing by 50% every year.
b. the number of employees is decreasing by 10% every year.
c. the number of employees is decreasing by 90% every year.
d. the number of employees is increasing by 90% every year.