There is a massive accident in Dallas! A big rig lost control and struck and completely damaged and totaled 10 cars

There is a massive accident in Dallas! A big rig lost control and

struck and completely damaged and totaled 10 cars. Your car was caught in the mix. Thankfully nobody was seriously injured, but there is a lot to litigate over such as who is at fault. The 10 car owners, all Dallas residents, join together as plaintiffs and sue the big rig company, which is headquartered in Houston. Can a federal court here this case?
Correct Answer
a.   No because while the minimum amount in controversy is likely met, the complete diversity requirement is not met. 
 b.  Yes because there is personal jurisdiction due the accident due to the accident occurring in Texas 
 c.  No because federal courts are too prestigious to deal with a run of the mill car accident case. 
 d.  Yes because they meet federal diversity jurisdiction requirements because we can estimate that 10 completely totaled cars is likely worth more than $75,000.


Please explain why A is the answer.