JW Enterprises Is Considering a New Marketing Campaign That Will

JW Enterprises is considering a new marketing campaign that will require the addition of a new computer programmer and new software.The programmer will occupy an office in JW's current building and will be paid $8,000 per month.The software license costs $1,000 per month.The rent for the building is $4,000 per month.JW's computer system is always on,so running the new software will not change the current monthly electric bill of $900.The incremental expenses for the new marketing campaign are

A) $13,900 per month.
B) $9,000 per month.
C) $13,000 per month.
D) $8,000 per month.