Multiple choice grading in Brightspace

Roma.P.670

how do I give 1 point to each student who answered either A or B (but not C or D)?  A and B are both reasonably good answers.  It see where it will let me give one point to all attempts,  but if I want to give a point to those who answered, say, B (where they had not received credit before), will that remove a point from those who had already answered A?  A is still correct. 

Jennifer.W.973

@Roma.P.670 Using Update All Attempts to give a point to students who answered B is the correct way to handle this. It will not remove any points from students who answered A if that was set as the original correct response.