5. Theresa decides to donate money to cancer research each year. Her brother, Tony, also decides to contribute. Together, they donate $1,000 per year to cancer research. If Tony is able to donate 1 times the amount that Theresa is able to donate, what is the amount in dollars that Tony will donate after 5 years, assuming the amount and proportions remain the same each year? A. $2,000 B. $2,100 C. $2,450 D. $3,000 E. $3,600