In a linear programming problem, the activity levels in a market equilibrium maximise profits relative to:
i) all nonnegative activity levels
ii) all activity levels
iii) only those activity levels that satisfy the resource constraints
iv) only those activity levels that satisfy the nonnegativity constraints and the resource constraints.
Select one:
a. i) is true
b. ii) is true
c. iii) is true
d. iv) is true