For some unknown reason, Mayo Express has a separate motor carrier policy with symbol $67($specifically described "autos"$)$ on each of its five commercial vehicles, but all policies are written by the same insurer and all have the same $$100,000$ liability limit$.$ Two Mayo Express drivers were racing each other away from a stoplight, and neither driver would yield when the left lane disappeared. The two Mayo Express vehicles collided head$-$on with an oncoming car whose driver was killed in the accident. What total dollar amount of liability coverage is available to Mayo Express?

$($Search Chapter $4)$

a$.$ None because of the racing exclusion

b$.$ $$100,000$

c$.$ $$200,000$

d$.$ $$500,000$