The Quantity $Q$ Of Charge in Coulombs $C$ That Has Passed Through a Point in a Wire Up

Multiple Choice

The quantity $Q$ of charge in coulombs $C$ that has passed through a point in a wire up to time $t$ (measured in seconds) is given by
$$Q ( t ) = t ^ { 3 } - 3 t ^ { 2 } + 4 t + 3$$
Find the current when $t = 1 \mathrm {~s}$ .

A) 24
B) 15
C) 18
D) 26
E) 1