The IV infusion pump for a patient receiving an IV therapy begins to alarm and displays occlusion. When the silence button is pushed, the alarm quickly resumes. Which action should the nurse take first?

Decrease the rate to 10 mL/hr and flush the line with 1 mL of heparin solution.

Check for kinking of the tubing or a closed clamp.

Notify the physician

Turn off the IV solution and gently flush the line with 3 mL of saline flush solution.