A: This is actually a very tricky question. I snagged Andy, though, and we talked it over. At first it seems like player A with 5 Keepers should win, since the meet the conditions and have no Creepers, but the goal specifically stipulates that if anyone has more than 5, the player with the most wins.
We decided that in this case, there can be no winner, and the game continues until a clear winner emerges.
In a case with two players tied for Keepers, with one having Creepers, however, the Creepers would eliminate one from the running.
Note that all of these contingencies would apply similarly for the Goal 10 Cards In Hand.