Answer:
depends on the number of invitations that were given out and the size or accomodation
The most effective method for gathering details about two subjects that one wants to compare is to LIST SPECIFIC QUESTIONS ABOUT BOTH SUBJECTS.
To effectively compare two people, one first has to write out the traits or the characteristics that one wants to focus on for the comparison. These characteristics should be listed out. Listing specific questions and answering those questions for each of the subject will clearly allow one to see the differences and the similarities between the concerned subjects.
I think it is the answer A but im not 100%