A. One expects more than a few people to attend the funeral of a great man.
In the excerpt there are only three cars in the funeral procession. This is a very low number considering the title describes Gatsby as great. When one looks even further at who is in the cars, it is obvious that Gatsby was not as great as his lavish parties and lifestyle made him seem.
While the other options are likely to be true statements, except for D as that is a bit of a stretch, they do not support the title as being ironic. Irony, in this sense, is sarcasm. It's when something stated is actually the opposite.
