We're told H is going with one other person in a scenario. Since we know H can't go in O, then this means that H can either go with one other person in R or V.
Looking at if H goes with one other person in R, this closes R out and also closes V out since R has to have more people than V. However, we also know that GM have to go in either R or V since G can't go in O, so this means there's no room for GM in this scenario. Thus, we know that this scenario won't work, and this means that H will have to go with one other person in V. Also, since G, M, F, and K won't be going into V, this means that L will be the one person going with H in V.
With H and L in V, GM goes into R. Since there are 6 people, two are already in V, R has to have more people than V, and each booth has to have at least one person, this means that R will have exactly 3 people total. F and K are the only two pieces left, and no rules surround them pertaining to going into O or R, so they can switch between these two booths.
Lookin at (A), we know this is false since L is in V. (B) looks great though and could definitely be true, since F could be in either O or R. Thus, (B) is the correct answer choice.
Does this make sense? Let us know if you have any other questions!