Which of the following characterizes the "precautionary principle" as it applies to risk from exposure to consumer products?

A) products should be proven to be safe before they are put on the market.
B) the burden of proof should be on those that question the safety of a product.
C) absolute safety can never be proven.
D) the burden of proof should be on the consumer.
E) pre-testing is unnecessary because if it is harmful we will be able to tell soon after it enters the market.