Consider the following statements:
1. dx/dy at a point on the curve gives slope of the tangent at that point.
2. If a(t) denotes acceleration of a particle, then ∫ a(t)dt + c gives velocity of the particle.
3. If s(t) gives displacement of a particle at time t, then ds dt gives its acceleration at that instant.
Which of the above statements is/are correct?
A. 1 and 2 only
B. 2 only
C. 1 only
D. 1, 2 and 3
