Please help.

How can firms use marginal analysis to determine the price of a product? a) profit maximization can occur when the marginal cost exceeds the marginal revenue. b) the total cost of production can determine the individual unit price of a product. c) marginal analysis can be used to determine at what price profit maximization occurs. d) firms can calculate the marginal cost of a product and set the price lower than the cost.

What drifted apart millions of years ago to create two different worlds

During the industrial revolution in europe, were recruited to locate criminals. sheriffs police bobbies thief catchers