[单选题]
A resistor and an inductor are cl/zn;ce-g +jmb1 q.h honnected in series to rsst7c 0 0 0.kupya66oni)v xya battery. The time constant for the circuit represents the time required for theuvapc.y6ks7t) o0 y0 ixs60nr current to reach
A. 25% of the maximum current.
B. 37% of the maximum current.
C. 63% of the maximum current.
D. 75% of the maximum current.