A sugar ant crawls along the vertical edge of a cereal box with a velocity given by v(t) = 2⁻ᵗ + (t-2)² + (t-2)³ - (t-2)⁴ for 0 < t < 3. What is the velocity at t = 2?
a) 0
b) -2
c) -4
d) -8