If you are going by those superficial factors, Monitor D is a better option given its size, scale and Deloitte branding.
But this not the way to approach decisions between two firms. Based on your interview experience and research, which of the two is a better FIT bothways (you and the firm) in terms of:
- Role & responsibilities, career aspirations
- Values (professional and personal)
Once you establish the FIT, you then look at $, location, brand image etc etc.
Only when there is a FIT, you can perform well, enjoy yourself, learn and not worry about outcomes. Otherwise you will always search for next move, something better and not feel settled. Please have a look at this article for more guidance on how to choose - https://www.preplounge.com/en/articles/how-do-i-know-which-career-is-right-for-me
Congrats & all the best choosing.