"quite a..." or "a quite..."

[Lxguy]

You've been having QUITE A long chat with the doctor.
This is A QUITE comfortable house.

These two sentences are both right.Is there any difference between "quite a.." and "a quite..."?
Here is an exercise:
--English is ________ difficult subject. I even want to drop it.
--You'd better not. I'll help you ______ it.
　 A. quite a, with　 B. a quite, with　
C. a very, for　　 D. very a, with

Is B also right?

[Pamela]

Yes, you can say:
English is a quite difficult subject, meaning that it's very difficult.

[Yankee]

.
You can also say "English is quite a difficult subject".
I'd also say that word order (quite a) would be the more commonly used one.
.

[Hothu]

English is ________ difficult subject. I even want to drop it.

i think the option "quite a" is correct.

[Molly]