Q. Which statement is true about the relation shown at the right?

• (A) It is a function because there exists one y- coordinate for each x- coordinate.
• (B) It is a function because there exists one x- coordinate for each y-coordinate.
• (C) It is not a function because there are multiple x-values for a given y-value.
• (D) It is not a function because there are multiple y-values for a given x- value.