A Stationary Company Makes Two Types of Notebooks: a Deluxe

A stationary company makes two types of notebooks: a deluxe notebook with subject dividers, which sells for $1.1, and a regular notebook, which sells for $0.85. The production cost is $1.00 for each deluxe notebook and $0.75 for each regular notebook. The company has the facilities to manufacture between 2,000 and 3,000 deluxe and between 3,000 and 6,000 regular notebooks, but not more than 7,000 altogether. How many notebooks of each type should be manufactured to maximize the difference between the selling prices and the production cost?

A) 2,000 deluxe and 5,000 regular
B) 3,000 deluxe and 4,000 regular
C) 2,300 deluxe and 4,000 regular
D) 2,500 deluxe and 4,000 regular
E) 3,000 deluxe and 5,000 regular