Yes your answer should be c;
This would be modeled by a translation 1 unit down and a 270° clockwise rotation.
Each of these points has the x and y values switched, with the y value one less than that of the preimage and negated. Taking one off the y-value is a translation 1 down; negating the y and switching it and x is a 270° clockwise rotation.
The problem is basically asking you _ x 4 = 50, so, what is 1/4 of 50? (12.5)
The answer to the problem is y^12
Pop ok you see so the answer here would be frantically elastic