Without altering the information depicted in following master production schedule, how many units could be immediately delivered at the beginning of period $2?$ You may need to use the scroll bar at the bottom of the page to see the entire diagram.

$\backslash$table$[[$Week$,1,2,3,4],[$Forecast$,30,30,30,40],[$Customer Orders,$35,15,20,18],[$Projected On$-$Hand Inventory $(50),15,85,55,15],[$MPS$,0,100,0,0],[$Available to Promise $($ATP$),15,47,,]]$