Two models of a product - Regular (X) and Deluxe (Y) - are produced by a company. A linear programming model is used to determine the production schedule. The formulation is as follows:
Maximize profit = 50X + 60 Y
Subject to: 8X + 10Y ≤ 800 (labor hours)
X + Y ≥ 120 (total units demanded)
4X + 5Y ≤ 500 (raw materials)
all variables ≥ 0
How many units of the regular model would be produced based on this solution?
A. 0
B. 100
C. 50
D. 120
E. none of the above