In the Economic Profit-Maximising Pricing Model,how Do the Total Revenue

In the economic profit-maximising pricing model,how do the total revenue and total cost curves generally behave?
Total revenue
Total cost

A) Upward sloping at increasing rate
Upward sloping at decreasing rate
B) Upward sloping at increasing rate
Upward sloping at constant rate
C) Upward sloping at decreasing rate
Upward sloping,rate decreases,then increases
D) Downward sloping at constant rate
Downward sloping,then upward sloping