In Which of the Following Cases Would the Manufacturer of Protective

In which of the following cases would the manufacturer of protective sports equipment be held liable?

A) A football player replaced the original cheek pads from his helmet with better-designed pads.
B) A baseball player replaced the Velcro straps of his protective gear, resulting in injury to the head.
C) A softball player removed the bars of his helmet, resulting in injury to the nose.
D) A lacrosse player suffered injury to his lower jaw as a result of a poorly designed face mask.