You have defined a structure struct point as above as well as successfully declared a variable named pentagon as an array of five such points. You would like to assign the value 4.1 to the y-coordinate of the fifth point in pentagon.

Which of the following are the correct ways to do so? Check all that apply.

Group of answer choices

pentagon[4].y = 4.1;

pentagon.y[4] = 4.1;

pentagon->y[4] = 4.1;

(pentagon+4)->y = 4.1;

(pentagon+4).y = 4.1;

(pentagon+4)[y] = 4.1