Emily Had an Excellent Year as a Saleswoman in 2007

Emily had an excellent year as a saleswoman in 2007.She earned $97,000.She paid $17,000 for "necessities" such as mortgage,food,and clothing.She was given a six-week all expenses paid vacation by the company for her sales performance that had a value of $9,000.Her provincial and federal income taxes totaled $24,000.What was her discretionary income?

A) $56,000
B) $73,000
C) $80,000
D) $88,000