For this assignment, you are required to create a program that could be used by a small business that provides a small variety of office and work supplies.

The nested dictionary$($three tevels$)$ below references the store inventory.

inventory

Category $1$: Desk Supplies

"Desk Suppl$1$es$"$:

"Pens": $\{"$Quantity$"$:$150,$ "Unit Price":$3\mathrm{.}45\},$

"Pencils": $\{"$Quantity$"$:$200,"$Un$1$t Price":$1\mathrm{.}50\},$

"Markers": "Quantity":$140,$ "Unit Price": $5\mathrm{.}0$