The Shadow price for welding is $$15/$hour$.$ The allowable decrease is $20$ hours, and the allowable increase for the welding time constraint is $30$ hours. The welders normally make $$14/$hour$,$ and during overtime, they earn up to $$16/$hour$.$ What decision should the management make after conducting a sensitive analysis?

Multiple Choice

Increase available hours for assembly time by $20$ hours

Decrease shadow hours for assembly time by $1$ hour

Allocate all the welders for overtime

Retain available hours for assembly time