Which one of the following statements is true for the speed

Which one of the following statements is true for the speed v and the acceleration a of a particle executing simple harmonic motion ?

1. When v is maximum, a is zero
2. When v is maximum, a is maximum
3. Value of a is zero, whatever may be the value of v
4. When v is zero, a is zero

When v is maximum, a is zero
v = ω √A² - x² ; a = ω² x
v_max at x = 0, but at x = 0, a = 0