A Business Makes Three Different Products, the Details of Which

Multiple Choice

A Business makes three different products, the details of which follow: $\begin{array}{llll}\text { Product code } & \text { A1 } & \text { A2 } & \text { A3 } \\\text { Selling price } & \$ 50 & \$ 46 & \$ 40 \\\text { Variable cost } & \$ 20 & \$ 24 & \$ 16\\\text { Weekly demand-units } & 50 & 40 & 60 \\\text { Machine time per unit } & 4 \text { hours } & 4 \text { hours } & 6 \text { hours }\end{array}$ The maximum machine time available is 350 hours per week. How many machine hours should be spent manufacturing product A3?

A) 35 machine hours.
B) 240 machine hours.
C) 120 machine hours.
D) None.