Who operates and controls a corporation in its day-to-day activities?

In a cartel

A) each firm has an incentive to decrease its own production below the level set by the cartel. B) the firms' marginal cost equals the price set by the cartel. C) each firm has an incentive to lower its price below the level set by the cartel. D) each firm has an incentive to raise its price above the level set by the cartel.

If disposable income is $400 billion, consumption spending is $380 billion, and MPC is 0.5, what is the level of saving?

A. $20 billion. B. $210 billion. C. $380 billion. D. $590 billion.