RainCo, a Domestic Corporation, Owns a Number of Patents Related

Multiple Choice

RainCo, a domestic corporation, owns a number of patents related to designing umbrellas. RainCo licenses these patents to unrelated parties. TexCo, a domestic corporation, paid RainCo $100,000 in royalties related to these licenses. TexCo uses the patent information in its manufacturing process in its Canadian plant. IrishCo, an Irish corporation, paid RainCo $25,000 in royalties related to the licenses. IrishCo uses the patent information in its manufacturing process in its Michigan manufacturing plant. How much foreign-source royalty income did RainCo earn from these licenses?

A) $0.
B) $25,000.
C) $100,000.
D) $125,000.