Dave grows wheat \((w)\) and barley \((b)\) on a farm. Dave expects to profit \(\$ 150\) per acre for wheat and \(\$ 180\) per acre for barley. The objective function for profit in this situation is:

a. \(P=150 w+180 b\)

b. \(P=150 b+180 w\)

c. \(P=180 w+150 b\)

d. \(P=150 w-180 b\)