Two basic types of decision alternatives are used to close the gap between supply and demand in operations management: options and DEMAND options. Which of the following are appropriate SUPPLY options for an organization that faces highe expected demands?$1.$ discounting product prices in off$-$peak periods$2.$ introduction of complementary products$3.$ adjust workforce levels by hiring more employees$4.$ used subcontractors to provide extra capacity temporarily$1$ and $3$ only$3$ and $4$ onlyall of them$2$ and $4$ only$1$ and $2$ only