PLEASE HELP Suppose this is the model vertices

float vertices[ ] = {

0.4f, 0.6f, 0.0f, //p0

0.0f, 0.0f, 0.0f, //p1

-0.4f, 0.0f, 0.4f, //p2

0.0f, 0.0f, 0.0f, //p1

0.6f, 3.0f, 0.0f //p3

};

And it is sent to vertex shader without further change.

a) What does glDrawArrays(GL_TRIANGLES, 0, 3) draw?

b) What does glDrawArrays(GL_TRIANGLES, 1, 3) draw?

c) What does glDrawArrays(GL_TRIANGLES, 2, 3) draw?

d) What does glDrawArrays(GL_TRIANGLES, 0, 5) draw?

e) For those triangles that are not degenerated, are the viewer seeing the front or back?