You are one of a group of ten colleagues. Most of them have invited the group over to their houses for a meal, and each time this has happened, most have come. All invites and arrangements are done by email, typically a month or so in advance
You email the whole group, inviting them all round for a meal at yours. on a day a month from now. One by one, each of them declines, until everyone has said they can't come.
Should you infer from this that:
A. What a coincidence! Everyone has a pre-booked holiday, family gathering or unspecified other prior engagement on that day
OR
B. They don't like you but don't want to tell you.
?