Originally Posted by tx_wiingman

while B is small and easy, security at C is and always has been staffed enough to easily handle all of C & E. Security lines will not be an issue at either terminal.

If I were you though, I’d get dropped off at D. D is the first stop on the C/D/E loop so
youll Be the first off the shuttle and avoid most of the traffic disaster at C.
D isn’t that busy in the mornings so you’ll have short security lines.
United has a check in counter at D if you’re checking a bag.
D terminal is connected to E and even shares the same skytrain stop as E. It’s the shortest walk of any terminal right now. Probably 5-15 min faster than taking B, doubke that if you’re sharing an airport shuttle with other pax and the driver decides to go to C/D/E before A/B.