Discussion locations and section leaders are:
Office hours are shown in the following table. Go to whichever office hours fit your schedule. You are not restricted to hours staffed by your discussion leaders. You may find it more helpful to go to discussions run by A course staff (see list above) but it's also ok to go those run by the B staff. Be aware that office hours may change, as need changes. Re-check this page for current hours and watch piazza for last-minute announcements (e.g. someone is sick).
Office hours are in 0211 Siebel. Exception: Carl's office hours are in 3209 Siebel.