$(15\%)$ For the data in the table below, comment on the three factors that affect facility layout problem difficulty$/$complexity$.$ Overall, is this an easy or hard problem to solve?

$\backslash$table$[[,$A$,$B$,$C$,$D$,$E$,$F$,$G$,$H$,$I,J$,$K$,$L$,$M$,$N$,$O$],[$A$,-,,50,,,200,,400,,,20,,,40,],[$B$,100,-,,,300,,30,,,500,,,200,,],[$C$,,,-,75,,400,,,80,,,120,,,55],[$D$,,300,,-,,,,60,,,500,,,300,],[$E$,40,,,200,-,,,,300,,,50,,,],[$F$,,,300,,,-,1000,,,40,,,,,200],[$G$,,75,,,,30,-,,,,300,,,250,],[$H$,500,,,35,,,,-,,700,,,50,,60],[$I$,,,300,,,450,,,-,,1200,,,,],[$J$,,,,200,,,85,,,-,,,600,,],[$K$,,450,,,25,,,,900,,-,,,300,],[$L$,,,,350,,,95,,,,70,-,,,450],[$M$,300,,,20,,,,180,,,,,-,400,],[$N$,,,600,,,50,,,,200,,,,-,400],[$O$,,75,,,,,200,,,,800,,,200,-]]$