Question 2 1 pts There is exactly one value of a such that the function 2= = −2y² + 5x ln(a + x² + 2y) — 5y cos x has a critical point with x-coordinate zero. Let p be -4 if that critical point is a local maximum, 6 if it is a local minimum, and -8 if it is a saddle. Then the value of sin a + cos p is -0.883 -0.496 -0.617 0.195 0.294 O 0.105 -0.612 O -0.708