[单选题]
You are designing a generator witsl08p*iy.rkp () duvyh a ma i-,at2u nipygqz 8vh790i xm/ximum $emf$ of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of $0.030 \; m^{2}$, what would be the frequency of the generator in a magnetic field of 0.030 T?
A. $7.1 \; Hz$
B. $7.5 \; Hz$
C. $8.0 \; Hz$
D. $44 \; Hz$
