What Did Frederick the Wise, Elector of Saxony, Do to Demonstrate

What did Frederick the Wise, Elector of Saxony, do to demonstrate his devotion and to gain access to the Church's Treasury of Merit?

A) He displayed relics that, when viewed, released a Catholic believer from many years in Purgatory.
B) He employed a full-time staff of priests to hear his daily confessions.
C) He built three separate monasteries within his palace, one for each order of the Franciscans, Dominicans, and Augustinians.
D) Although married, he took a vow of chastity, which he also required of his wife.
E) He borrowed heavily from the Fugger banking family to fund the construction of Wittenberg University, where Luther taught.