Take context from the input text and decide on the accurate relationship between 'Interfax' and 'news agency' from the options provided.
Options: product/material produced, subsidiary, brand, platform

Russian news agency Interfax reported that Aeroflot was planning to acquire Transaero for the symbolic price of one ruble (one US or euro cent), citing a source present at the talks with Shuvalov.
product/material produced