Henry can clean 4 rooms in 5 hours. With Lottie’s help, they can clean the same number of rooms in 3 hours. How long will it take Lottie to clean 4 rooms by herself?
(A) 15 hours

(B) 10 hours

(C) 8 hours and 30 minutes

(D) 7 hours and 45 minutes

(E) 7 hours and 30 minutes