Chapter 17 - Electric Current and Resistance - Learning Path Questions and Exercises - Multiple Choice Questions - Page 617: 8

(d) all are the same.

Current is defined as $I=\frac{q}{t}$ which implies $q=It$ $q_{1}=2.0\,A\times60\,s=120\,C$ $q_{2}=4.0\,A\times30\,s=120\,C$ $q_{3}=1.0\,A\times120\,s=120\,C$ Current flow past a given point is the same in all the three situations.