A First ÐTo-Default (FTD) Basket Pays Off When the First

A first Ðto-default (FTD) basket pays off when the first default occurs in the given basket of "names." The spread on a first-to-default basket is:

A) At least the narrowest credit spread of all the names in the basket and at most the widest credit spread of all the names in the basket.
B) Equal to the average credit spread across all the names in the basket.
C) At least the widest credit spread of all the names in the basket and at most the sum of the credit spreads across all the names in the basket.
D) Equal to the widest credit spread of all the names in the basket.