Minimize 1231 + $2 + 219:3 - $4 - 735 Subjectto -21-422- 223+ 34+ 35= 5 321 + 1:2 - 2:\" + 535 = 14 2171224" 6$3+34225= 7 $1,...,$52 0 Suppose that x3, x4, x5 are currently the basic variables. a). What is the current basic solution x3=( x3, x4, x5)? b). What non-basic variables are candidates to enter the basis? c). If x; is chosen to enter the basis, what happens when you try to determine the leaving variable