7. A loop of wire with resistance 2 ohm lies in a magnetic field. The magnetic flux through the loop as a function of time t is given by: m = (2t² + 2t), where m is in tesla meters squared and t is in seconds. What is the current in the loop at t = 3 s? A. 6 A
B. 7 A
C. 12 A
D. 14 A
