A scuba diver descends farther down into the ocean from an initial depth of 14.7 feet below sea level. The scuba diver descends at a constant rate for 412 minutes and reaches a depth no more than 65.1 feet below sea level. What is the maximum rate, r, that the scuba diver may descend?

r≤17 11/15

r≥17 11/15

r≤11.2

r≥11.2