Why is it important for a marketer to begin marketing mix decisions with Product when all 5 Ps are interrelated?

If a firm has a good product, the other 4 Ps dont matter as customers will want the product.

Products are easier to test, and testing should be done before setting prices or determining where to place the product.

The level of risk increases as a marketer goes through the 5 Ps, and its better to start with a less risky part of the mix.

Products and clear ideas of the customer benefits are the basis for all other considerations.