How is the relative pronoun in the adjective clause used in the sentence?

After two years, I met the friend with whom I had exchanged many letters.

A.
object of a preposition

B.
possessive

C.
direct object

D.
subject

i picked D

Question

How is the relative pronoun in the adjective clause used in the sentence? 

After two years, I met the friend with whom I had exchanged many letters.
 
 A.
object of a preposition
 
 B.
possessive
 
 C.
direct object
 
 D.
subject

i picked D

linn99123 · Answer

@esshotwired

esshotwired · Answer

Do you know which clause is the adjective clause?

linn99123 · Answer

this is my last one and ill probly log for the day

linn99123 · Answer

it dosnt even say

esshotwired · Answer

The adjective clause is with whom I had exchanged many letters. I believe that it would be A but idk. I know it is C or D though

linn99123 · Answer

it is ir isnt?

esshotwired · Answer

ir?

esshotwired · Answer

oh wait sorry. it is NOT C or D. I would go for A though