IITB Mtech Offer Order

Question

What criteria IITB use to make offers? Are TA and RA offers made separately or simultaneously?

Example: If 1st preference's TA doesn't meet cutoff then the same preference's RA is considered or 2nd preference TA? Are TA offers irrespective of RA offers? Meaning a person can simultaneously get both TA and RA offers for same or different preference if within cutoff ofcourse.?