XYZ Inc Produces Two Types of Printers - Regular and High-Speed

XYZ Inc. produces two types of printers - regular and high-speed. Regular uses 2 units of recycled plastic per unit, and high-speed uses 1 unit of recycled plastic per unit of production. XYZ is committed to using at least 5,000 units of recycled plastic per month. A critical machine is needed to manufacture the printers. Each unit of regular requires 5 units of time in this machine, and each unit of high-speed requires 3 units of time. The total time available in this machine per month is 15,000 units. Let $X_{1}$ be the number of units of regular produced per month and $X_{2}$ the number of units of high-speed produced per month. The appropriate constraint/s will be

A) $2 X_{1}+X_{2} \geq 5000$
B) $2 X_{1}+X_{2} \leq 5000$
C) $5 X_{1}+3 X_{2} \leq 15000$
D) A and C
E) B and C