Point A is the incenter of ΔDEF. Point A is the incenter of triangle D E F. Lines are drawn from the points of the triangle to point A. Lines are drawn from point A to the sides of the triangle to form right angles and line segments A L, A M, and A N. The length of A L is 5 x minus 1 and the length of A M is 6 x minus 3. What is the length of NA? 2 units 9 units 11 units 14 units