Carlos sells video games on a web site. the cost for his web site is $75 per year. Carlos sells each video game for $25. Which equation can Carlos use to determine how many video games "g", he must sell to make a profit of $50 per year?

A. 100g = 50
B. 75g + 25 = 50
C. 25g + 75 = 50
D. 25g - 75 = 50

I'll be glad to check your answer.