Aila's gym class just completed a physical fitness unit. one of the activities was improving flexibility. students had to sit on the ground with their feet in front of them and reach their arms out as far as they could. a scale like the one in the picture below was used to measure their flexibility. aila's measurement at the end of the unit was four more than her measurement at the beginning. if her measurement at the beginning was -2, how far was aila able to reach at the end of the unit?

+2
+4
-6
-5