The Following Warning Appears on a Sticker Attached to a Hover

The following warning appears on a sticker attached to a hover board: ​
Risk of Death and Serious Injury
Whenever you ride on vehicle,you risk injured [sic] from loss of controls [sic] and fallings [sic].To ride safely,you must read and follow all the instructions and warnings in this user manual.
​What is the effect of the warning?

A) ​The warning serves to disclaim the liability of the manufacturer of the hover board for injuries resulting from use.
B) ​The warning serves to disclaim the liability of the manufacturer of the hover board for injuries resulting from the failure to follow the manual.
C) The warning serves to disclaim the liability of the manufacturer for all use and design defects.
D) The warning serves to disclaim the liability of the manufacturer for all express and implied warranties.