In Problem 2, Let a = the Total Amount Invested $\ge$

In problem 2, let A = the total amount invested in stocks and B = the total amount invested in bonds.To state that at least 40% of the investment in stocks must be in stock 1, two constraints in the model would be:

A) X₁ - .4A $\ge$ 0, X₂ + X₃ + X₄ - A = 0
B) X₁ - .4A $\ge$ 0, X₁ + X₂ + X₃ + X₄ - A = 0
C) X₁ - .4A - .4B $\ge$ 0, A + B = 300,000
D) X₁ - .4A - .4B $\le$ 0, A + B = 300,000