10. What, if anything, is the primary difference between an excess liability policy and an u brella liability policy? A. While both policies provide excess limits, an umbrella policy may also provide coverage not available in the underlying policies. B. While both policies provide excess limits, an excess policy may also provide coverage not available in the underlying policies. C. There is no difference; these are just two terms for the same type of policy. D. Usually an excess liability policy carries a higher premium than an umbrella policy.