GMT Transport Company ended the year with record sales of $18 million. The firms cost of goods sold totaled $10.8 million while its operating expenses totaled $4 million. GMT paid $1.5 million in interest expense and had an income tax liability of 595,000. What is the firm NPM? a. 40%

b. 17.78%

c. 6.14%

d. 9.34%

c.12.76%