We should remember that Monaco is nothing like a conventional circuit - that's why they're bringing these compounds in the first place - and the stress on the tyres is considerably less than anywhere else. So a soft tyre that goes out of its optimum temperature window and shows extreme wear at a high intensity circuit like Catalunya might last a lot, lot longer at Monte Carlo.
In answer to the question, without having analysed the practice sessions, I'd expect two stops, since one or other of the tyres is likely to be a less favourable choice on either performance or wear grounds, and so they won't want to be on that tyre for longer than 1/3rd of the race, if they can avoid it.
In answer to the question, without having analysed the practice sessions, I'd expect two stops, since one or other of the tyres is likely to be a less favourable choice on either performance or wear grounds, and so they won't want to be on that tyre for longer than 1/3rd of the race, if they can avoid it.