A manager of $468,000$ square foot medical office building recommends renovating the building's common areas and main lobby. Local bids indicate that the improvements would cost $$1\mathrm{.}2$ million to complete. The manager states that the aesthetic upgrades would increase average rents by $$\frac{0\mathrm{.}20}{s}\frac{f}{m}$onth. What would the payback period be for this recommendation?

A$.26$ months

B$.13$ months

C$.18$ months

D$.31$ months