Reply to "Reported"

Hi. Rasha Assem, and my greetings from Makkah, 

Rasha Assem posted:

I was told that my friend ………………. a terrible accident while he was driving to Mansoura.

a had had          

b had          

c was having          

d is having         

I think that 'b' is the correct answer. If I am right, would  'a' be wrong because backshift is not possible here as backshift wasn't used with 'was driving' ?

Yes, the only correct answer here is: 'had'. The backshift isn't needed here.