When drawing flags, do you use the open and close or draw the max + min?

[thegoatiest]

Hey there,
I've finally decided to take trading seriously and do some learning.

I'm trying to figure out how to draw a bull flag. Both regular and pennant.
I was wandering for each of these. Do you draw the resistance and support lines utilizing the green close and red close.  Or instead do you use the max and min lines. (I've yet to learn the terminology for the 'tails' or 'sticks')
So, drawing the lines like

A)
   |
---|-----------------
   []
---|-----------------
   |

OR

B)
--------------
|
[]
|
--------------


Hope that made sense.
cheers,
G