Be sure to type the correct answer such as a$,$ b$,$ c$,$ d$,$ or e$.$ Do not type your answer. Ensure your answers adhere to the multiple$-$choice format, even if you encounter different decimal points.

COBU $305$ Store has a demand for $5,000$ tablets per year. The store operates a $250-$day working year. On average, delivery of an order takes $3$ working days.

The reorder point i $$ units.

a$)60$

b$)70$

c$)80$

d$)90$

e$)100$