A. Experiments are only required in very limited circumstances as reviews by stakeholders can often achieve the same or better results.

B. Proposed solutions are likely to succeed as they are based on market research.

C. It is more cost-effective to allocate a small sum of money to validate a solution than to create a solution that does not meet the customer's actual needs.

D. Experiments should not be run on products that are already launched because experiments are only effective for new products.