What is the relationship between 'Eurogroup' and 'Jeroen Dijsselbloem' in the context of the input sentence.
Options: member of, chairperson, founded by, industry

Eurogroup chief Jeroen Dijsselbloem said the "issue of credibility and trust was discussed" amid widespread suspicion of a Greek government that has offered new reforms just days after voters rejected similar terms in a surprise referendum.
chairperson