please clear which option is the answer :)

A manufacturing company produces four parts that require the use of a lathe and a drill press. The two machines operate 10 hours a day each. The following table provides the time in minutes required by each part: Product 1 2 3 4 Production time in min Lathe Drill press 5 3 6 2 5 7 4 Additionally, the number of units of part 1 may not exceed that of part 2 Assuming that X; : number of units need to be produced from producti, wherei E (1.2.3.4) The constraints and the objectives that are used to balance the two machines by limiting the difference between their total operation times to at most 30 minutes", are: Select one: Minimize si + s + s + 5x7 + 6x2 + 4x3 + 7x4 + $i - st = 30 3x; + 2x2 + 5x3 + 4x4 + $z - st = 30 Minimize : S; +st 2xy + 4x2 - Xz + 3x4 + s3 - 5 = 30 - 2x1 - 4x2 + x3 - 3x4 + $ - $ = 30 Minimize 2-15 5x) + 6x2 + 4x3 + 7x4 + s1 - $t = 30 3x1 + 2x2 + 5x3 + 4x4 + $5 - st = 30 Minimize si + $ 3x3 + 2x2 + 5x2 + 4x4 + $5 st = 30 + Minimize si + st 5x + 6x2 + 4x3 + 7x4 + si-st = 30