There are six questions below

A bank has exactly four cashier windows, arranged in a row and numbered consecutively 1through 4 from one end of the row to the other. The bank has exactly six cashiers: two supervisors (Joan and Karim); and four trainees (Lorraine, Mark, Nora, and patrick). Throughout a particular peak-hour period, the stationing of cashiers at windows is restricted as follows: There must be exactly one cashier at each window. The cashier at window 2 must be a supervisor. Lorraine must be at a window but cannot be at window 3. If Mark is at one of the windows, Joan must be at a window immediately adjacent to it. The cashiers at the windows must include either Nora or Patrick, but they cannot include both Nora and Patrick.

Which of the following lists the cashiers who can be stationed at windows 1 through 4 during this period?

stationed at windows 1 through 4 during this period?

If during this period Patrick and Mark, not neces- sarily in that order, are stationed at immediately adjacent windows, which of the following must be stationed at window 4 during this period?

If during this period Lorraine and Mark, not neces- sarily in that order, are stationed at immediately adjacent windows, which of the following can be stationed at window 1 during this period?

If during this period Lorrained and Nora, not neces- sarily in that order, are stationed at immediately adjacent windows, which of the following must be true during this period?

If during this period Mark is stationed at a window, which of the following CANNOT be stationed at a window during this period?

Which of the following must be true about the stationing of the cashiers during this period?