Coach decaro records the cross country runners' times compared to their personal best times.
runner
gregor
hiroki
isabelle
juan
karen
3k times
time compared to
personal best
+5.6
-11.6
+3.2
0
-5.2
which list correctly orders the runners from most improved to least improved?
juan, hiroki, karen, isabelle, gregor
juan, isabelle, karen, gregor, hiroki
hiroki, karen, juan, isabelle, gregor
gregor, isabelle, juan, karen, hiroki