1.Ms. Marston has net tax owing for 2017 of $4,500, net tax owing for 2018 of $8,000, and estimated net tax owing for 2019 of $7,500.If she wishes to pay the minimum total amount of instalments for the 2019 taxation year, her first payment on March 15 will be for what amount? (Show calculations)

A.Nil.

B.$1,125.

C.$1,875.

D.$2,000.