In Problem 8, If a = 2

Multiple Choice

In Problem 8, if a = 2.40, b = 0.50, and c = 1, the marginal products of x₁, x₂, and x₃ (in this order) are

A) increasing, decreasing, and constant.
B) all increasing.
C) all decreasing.
D) decreasing, increasing, and decreasing.
E) all increasing if A > 1.