Which one of the following, if substituted for the constraint that if Jaramillo is assigned to one of the ambassadors...

Answer-choice C states: "If Ong is not assigned to an ambassadorship, then Kayne is assigned to an ambassadorship." Under the initial rules of the game setup: either O or K must be "in," or they cannot both be "out," which ironically is the wrong answer-choice C. If both O and K are out, then the contrapositive to rule 2 would also force J "out." But since we do not have an extra "out" space for J, answer-choice C is very tempting!!!!!! The only thing I can think of for eliminating C is the following (but I am not confident): Not taking into account the other rules, answer-choice C leaves the possibility for both O and K to be out, which is impossible because of the contrapositive to rule 2: if K is out, then J is out, but there are no more "out" spots because of the distribution dictates three "in" corresponding to V, Y, and Z, and two "out", But with answer-choice C we have a possibility (a could be true) of all three O, K, and J being out; not enough space on the outside or leaving one embassy unassigned which contrary to the setup. Is this why C should be eliminated?