I saw in the dictionary the verb anfragen
is vi. (intransitive verb, verb that doesn't take object word.) Someone asked me
A. Darf ich Sie anfragen?
But I think it should be fixed to
B. Darf ich Sie etwas fragen? or
C. Darf ich Ihnen über etwas anfragen?
Is my understanding correct?
And I thought, when the speaker and listener know what the topic is,
D. Darf ich Ihnen anfragen?
can also be said. Is D ok?
I'm almost sure my understanding is correct, but just to make sure, please tell me which is wrong, which is correct.