hi could i have help wiht this

The table below represents market demand for good Q at different prices P. The firm's unit cost of production is $70. Based on this information, which of the following is correct? Q 100 200 300 400 500 600 700 800 900 1000 P $240 $220 $200 $180 $160 $140 $120 $100 $80 $60 O a. The minimum profit that can be attained is $240. O b. The maximum profit that can be attained is $45,000. O c. The profit-maximising output is Q = 400. O d. At Q = 200, the firm's profit is $55,000