"objective; object of preposition" Is your answer.
Do you have an excerpt or anything to base your answer on… ? from the premise alone, i would say C
The correct options are I AND II.
When one buys a product that is not working as it ought to, one has the right to return such a product to the manufacturer. When returning such product, it should be accompaned by by a letter of complaint, which gives information about the product and the date and price of the product.