Meaning of 'indeed'

[esra]

Test No. incompl/elem-16 "Learn it by heart", question 6

Thank you very much indeed, that's very kind ......... you.

(a) from
(b) for
(c) of

Test No. incompl/elem-16 "Learn it by heart", answer 6

Thank you very much indeed, that's very kind of you.

Correct answer: (c) of

Your answer was: incorrect
Thank you very much indeed, that's very kind from you.
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what is the meaning of 'indeed'?
and i don't understand that why we use 'of you'?

thanks
esra

[Alan]

Hi Esra,

When you add indeed, you make the words stronger. You can say very good indeed, which means very, very good. When you say thank you very much indeed, you are saying thank you, thank you, thank you.

It's very kind of you means you are very kind (to do that). It's very kind of him means he is very kind (to do that).

Alan
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English as a Second Language
You can read my ESL story 'the' vs. 'a/an'

[Yoki]

hi alan
thank you very much indeed for your explanation
sometimes i need to use "indeed' to express my feeling of someone support

now i know how to say ...

yoki

[Sawsann]

I Don't understand why do you use of