The Pithybottoms Want to Make a Donation to Set Up

The Pithybottoms want to make a donation to set up a scholarship trust fund at Hinose College. The fund is to support payments of $5,000 at the end of every three months in perpetuity. If the fund earns 7.5% compounded quarterly, how much must they donate?

A) $666,667
B) $375,000
C) $266,667
D) $66,667
E) $200,000