If the R.L of a B.M is 100.00m, the backsight is 1.215m and the foresight is 1.870m, the R.L of the forward station is

- 1
  
  99.345 m
- 2
  
  100.345m
- 3
  
  100.655m
- 4
  
  101.870m

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