4. [1 Point) Consider the following topographical map of part of Tobacco Ridge. The elevations given on the contour lines are measured in feet. Use the map to answer the following questions: (a) What is the elevation at the point labeled P? Make sure to include units on your answer. (b) Is the elevation greater at the point labeled A or the point labeled B? Greater elevation at: O A O B (c) On the map, label a point (call it Q) where the terrain due east [to the right) is at. (d) On the map, sketch a short line segment (call it L, and use an arrow to indicate the direction we should walk it) that we could follow to encounter terrain with a positive (uphill) slope