Which do you feel is the better option (details below)

First, I apologize if this has been asked before.
So here’s the scenario: You are part of a small group of friends, say 5 or 6 people total. You hang out on a regular basis, celebrate birthdays together, and so on. One member of your group is notoriously low on disposable income while everyone else has a decent income. One night surfing the internet, you find cheap airfare to Vegas and decide a weekend trip is in order. Now regarding the friend who doesn’t have much money to spare, do you
A) invite them along on the chance they can afford the cheap airfare, but knowing there’s a strong chance they’ll have to decline or…
B) Save them the embarrassment of having to say no due to money reasons and don’t send the invite at all?