Taken Literally,what Did the Term Investiture Mean to Medieval Christians

Taken literally,what did the term investiture mean to medieval Christians in the eleventh century?

A) the legal procedure associated with making a pious Christian man or woman a saint.
B) buying an ecclesiastical office with money,such as the position of bishop or cardinal.
C) the practice of appointing a bishop or abbot and dressing him with the symbols of his office.
D) a business investment in monastic property with the expectation of a return.
E) the Church practice of giving new clergy their vestments.