Dub Wireless's Marketing Team Spent $750,000 in 2014 to Add

Dub Wireless's marketing team spent $750,000 in 2014 to add 12,000 new subscribers. In 2015, Dub spent $865,000 to add 12,500 new subscribers. What was the marketing team's productivity in 2014?

A) 0.004 subscribers/$
B) 0.016 subscribers/$
C) 0.014 subscribers/$
D) Cannot be determined from the information given