The Position of Car a and Car B, Starting Out

Multiple Choice

The position of car A and car B, starting out side by side and traveling along a straight road, is given by s = f(t) and s = g(t) , respectively, where s is measured in feet and t is measured in seconds (see the accompanying figure) . ​ ​
Which car is traveling faster at t​₁, t​₂ and t​₃?
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A) Cars are traveling at the same speed at t​₁, car B is traveling faster at t​₂, car A is traveling faster at t​₃
B) Car A is traveling faster at , car B is traveling faster at t​₂, cars are traveling at the same speed at t​₃
C) Car A is traveling faster at t​₁, car B is traveling faster at t​₂, car A is traveling faster at t​₃
D) Car A is traveling faster at t​₁, cars are traveling at the same speed at t​₂, car B is traveling faster at t​₃