This Table Shows the Total Costs for Various Levels of Output

question 9

Multiple Choice

This table shows the total costs for various levels of output for a firm operating in a perfectly competitive market.
According to the table shown,the firm's marginal costs:

• A)are constant.
• B)increase as output increases.
• C)decrease until the 2^nd unit,then increase.
• D)increase until the 4^th unit,then decrease.