Q$.$ Grey Pebble Real Estate seeks a fully amortizing fixed$-$rate five$-$year mortgage loan to finance $75$ percent of the purchase price of a residential building that costs NZD$5$ million. The annual mortgage rate is $4\mathrm{.}8$ percent. The monthly payment for this mortgage would be closest to:

A$.$ NZD$70,424.$

B$.$ NZD$93,899.$

C$.$ NZD$71,781.$

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