Not faring so well was Twitter (Xetra: A1W6XZ - news ) , which sank 11pc in extended trade after the microblogging company said its monthly average users grew at the slowest pace since it went public in 2013.
What is the relationship between 'Twitter' and 'microblogging' in the context of the input sentence.
Options: original broadcaster, location of formation, product/material produced, parent organization