When casting scorching ray must the caster choose his targets first and then roll each ray to determine if they hit? Or, can they choose one target at a time and see the results of the attack and damage before choosing the next target and ray attack?
Example:
Wizard casts scorching ray and there are 3 skeletons. If the first ray kills the first skeleton can he then aim the other 2 rays at the next one, or does it need to be pre-determined where each ray is going to go?