question: The following survey was carried out from the bottom of a shaft at A, along an existing tunnel to the bottom of a shaft at E.<image 1>If the two shafts are to be connected by a straight tunnel, calculate the bearing A to E and the grade.
  Options: A: Bearing AE = 87°,47':Grade = 1.78 in 652.33 = 1 in 413, B: Bearing AE = 87°,47':Grade = 1.88 in 652.33 = 1 in 413, C: Bearing AE = 87°,47':Grade = 1.68 in 652.33 = 1 in 413, D: Bearing AE = 87°,47':Grade = 1.58 in 652.33 = 1 in 413