How to make D libraries callable from C?

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Hello,
I am a D newbie and my company makes heavy use of C. I would like to
demonstrate that the D language can be beneficial much more than Java.
My question is: is it possible to make a library, that is callable
from C? I guess i would have to write the corresponding .h file for
inclusion, with possibly a C-wrapper around the D classes.
Thank you for helping.

Alain