The Normal Annual Precipitation at Stations X, A, B and C

Multiple Choice

The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be

A) 70mm
B) 80mm
C) 90 mm
D) 105 mm