依据球面等值换算法,若散光度数原为-2.00DS/-4.00DC×180,经试戴散光度数调整为-2.00DC,则调整后的处方为
A、-4.00DS/-2.00DC×180
B、-3.00DS/-2.00DC×180
C、-4.00DS/-2.00DC×90
D、-3.00DS/-2.00DC×90