Identify all possible quadrants of an angle $\theta$ that satisfies the given conditions. \[ \cos \theta=0, \tan \theta<0 \] Select all possible quadrants below. A. Quadrant II B. Quadrant IV C. Quadrant I D. Quadrant III

Step 1 ：The cosine of an angle is zero when the angle is \(\frac{\pi}{2}\) or \(\frac{3\pi}{2}\) (90 or 270 degrees). This means that the angle is either in Quadrant II or Quadrant III.

Step 2 ：However, the tangent of an angle is negative when the angle is in Quadrant II or Quadrant IV.

Step 3 ：Therefore, the only quadrant that satisfies both conditions is Quadrant II.

Step 4 ：\(\boxed{\text{Quadrant II}}\)