Which statements are true about competitive advantage?

A company pursuing a competitive advantage based on low costs will not always charge the lowest price.

A company with competitive advantage could have lower costs than rivals with the same revenue.

The company with the lowest costs will have a competitive advantage.

A company with competitive advantage could have higher costs than rivals if it has higher quality.

A business with excellent service but higher prices is likely to have a competitive advantage over a competitor with lower costs but poorer quality.

The company earns higher profits than most rivals in the same market.