A particle moves in a straight line and has acceleration given by a(t) = 5t³. Its initial velocity is −3 cm/s and its initial displacement is s(0) = 4. Find its position function s(t).
A. s(t) = t⁴ - 3t² + 4
B. s(t) = t⁴ + 3t² + 4
C. s(t) = t⁵ - t³ + 4
D. s(t) = t⁵ + t³ + 4