Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 35 problems. Each problem is worth either 5 points or 2 points. How can you set up a system of equations to find how many problems of each point value are on the test?

Let x = the number of questions worth 5 points.
Let y = the number of questions worth 2 points

A. x + y = 35, 5x + 2y = 100
B. x + y = 100, 5x + 2y = 35
C. 5x + y = 35, 2y + x = 100
D. 2x + y = 100, 5y + x = 35​