What Was the Purpose of the Slavic Congress in 1848

What was the purpose of the Slavic Congress in 1848?

A) To negotiate the release of territories in the Russian Empire that wanted to be part of eastern Europe
B) To return Poland to the control of its own government instead of being a dependent state of Russia
C) To form the nation of Yugoslavia
D) To reserve the right to use Czech, Slovak, and Croation languages, while remaining part of the Habsburg Empire
E) To gain independence from the Habsburg Empire under a protectorate state of Russia