The statement "The graph crosses the y axis at (0,-5)" is a true statement because the red line crosses at -5 on the y axis. This allows us to rule out choice D. Choice C can be ruled out because the graph never increases. The graph would have to be moving uphill, as you read from left to right, to be increasing. Choice B is false because the junction point is at x = -2 and not x = 0.
The rule for a 90 clockwise rotation is basically an 180 degree rotation counterclockwise so (x,y) to (y,-x) so (-6,-2) to (-2,6) (-3,1) to (1,3) (-1,1) to (1,1) (2,-4) to (-4,-2)