Two hours after the start of a 100-kilometer bicycle race, a cyclist passes the 80-kilometer mark while riding at a velocity of 45 kilometers per hour. 

(A) Find the cyclist’s average velocity during the first two hours of the race. 

(B) Let f(x) represent the distance traveled (in kilometers) from the start of the race (x = 0) to time x (in hours). Find the slope of the secant line through the points 10, f(0)) and (2, f(2)) on the graph of y = f(x).

(C) Find the equation of the tangent line to the graph of y = f(x) at the point (2, f(2)).