b ?
Not e, because longer to wilt does not mean that importers would not have to honor the agreement.
Not d, It is not the highest selling flower, we do not care about this as we are concerned whether the new flower will sell more.
Not c, as irrelevant
Not a, we do not care about the splicing process; we care about the outcome: the flower takes longer to wilt and if the consumers are interested in such a feature.
Not e, because longer to wilt does not mean that importers would not have to honor the agreement.
Not d, It is not the highest selling flower, we do not care about this as we are concerned whether the new flower will sell more.
Not c, as irrelevant
Not a, we do not care about the splicing process; we care about the outcome: the flower takes longer to wilt and if the consumers are interested in such a feature.