We thank all the reviewers for their careful readings and constructive comments

We thank all the reviewers for their careful readings and constructive comments. Note that following the RUM interpretation of MNL model (please see response to Rev. #3 for details), the score Re. Applications: As discussed in the Introduction, some motivating applications of our problem lies in various kind of Moreover, as we clarified in Rem. 1 and 2, for the special case of only two-sized subsets (i.e. when k = 2), our regret Bandits to subsetwise feedback ( Multi-Dueling bandits), also use the same notion of regret as ours (see Ref. [11,39]). We sincerely request the reviewers to kindly reconsider their scores based on the above clarifications. Mixed mnl models for discrete response.