Two relationships are described. Relationship S: Tom worked 30 hours and got a $307.50 paycheck. The next week, he worked 37 hours and got paid $379.25. Relationship T: Sam painted his house in 9 hours a few years ago, then this year he invited his brother and best friend to help and they finished the house in 3 hours. What statement is true about these relationships? A. Neither relationship is a direct variation. B. Both relationships are direct variations. C. Only Relationship S is a direct variation. D. Only Relationship T is a direct variation.