Question Statement:
Five stations A, B, C, D, E have average annual rainfall 1020, 810, 675, 940, 780 mm. In a particular year, station A was non-operational; B, C, D, E recorded 890, 725, 980, 850 mm. Estimate the rainfall at A that year (mm).
Options:
- (A) 758
- (B) 878
- (C) 1038
- (D) 1098