Isabella's teacher said she must read more than 70 pages of her book by the end of the week. Isabella is able to read 12 pages of her book per hour, and she has already read 10 pages. Which statement describes how many more hours Isabella must read her book to complete the assignment?

She must read up to 6 more hours.

She must read more than 5 more hours.

She must read fewer than 5 more hours.

She must read no less than 6 more hours.