What Was the Sole Issue Before the U

What was the sole issue before the U.S. Supreme Court in the case of McKeiver v. Pennsylvania (1971) ?

A) whether juveniles have the right to a jury trial during adjudication hearings
B) whether juveniles have the right to bail
C) whether the preventative detention of a juvenile charged with a delinquent act is constitutional
D) whether juveniles could be sentenced to death