In 1529, Landgrave Philip of Hesse's 1529 Held a Conference

In 1529, Landgrave Philip of Hesse's 1529 held a conference in Marburg in an attempt to unite the various reform movements in Germany and Switzerland. The conference failed to do so because the key players Luther and Zwingli could not agree on ________.

A) the number of sacraments
B) whether religious officials should be allowed to marry or if they should remain celibate
C) what happened to bread and wine during the sacrament of the Lord's Supper
D) what age people should be baptized
E) the position of saints in the broader theology