solve the question and explain properly

We wish to evaluate I = F . dr where C is the curve below. Which of the following statements is true? y By Green's theorem, I is equal to a double integral over a triangular region, and we need to set up one double integral to evaluate it. By Green's theorem, I is equal to a double integral over a triangular region, and we need to set up two double integrals to evaluate it. Green's theorem cannot be used because C is not closed. Green's theorem cannot be used because C goes clockwise