交流电路阻抗Z=3+j4 Ω,电流I=10A,则电路视在功率S=(____)。
A300VA$;$500W$;$400VA$;$500VA
B300VA$;$500W$;$400VA$;$500VA
C300VA$;$500W$;$400VA$;$500VA
D300VA$;$500W$;$400VA$;$500VA
A300VA$;$500W$;$400VA$;$500VA
B300VA$;$500W$;$400VA$;$500VA
C300VA$;$500W$;$400VA$;$500VA
D300VA$;$500W$;$400VA$;$500VA