Called Air Canada and not getting definite information. Also checked seatguru and it is not specific.

I plan on flying on a 763 YVR to YYZ. Row 19 is showing an exit row.
Also plan on flying on a 77W (777-330ER) from YYZ to GRU. Row 31 and 50 are showing exit rows.

I want to know if each of these exit rows have windows? And if they do, which rows?



Thanks!