单项选择题

A.-50℃对应2V,200℃对应10V,250℃/8V=31.25℃/V
B.-60℃对应2V,150℃对应10V,210℃/8V=26.25℃/V
C.-50℃对应2V,150℃对应10V,200℃/8V=25℃/V
D.-50℃对应2V,100℃对应10V,150℃/8V=18.75℃/V