Bob Brooks works a $37\mathrm{.}5$ hour "normal workweek" and his salary is $$806\mathrm{.}25.$ He and his employer agreed his salary covers all hours worked up to $40.$ This week, Brooks worked $43$ hours. Brooks' gross pay for the week is:

a$.$ $$987\mathrm{.}66.$

b$.$ $$806\mathrm{.}25.$

c$.$ $$903\mathrm{.}00.$

d$.$ $$1,038\mathrm{.}75.$