IKEA Sources Its Goods from All Over the World

IKEA sources its goods from all over the world. In order to ensure consistency across suppliers, and to effectively compare bids, IKEA generates product specifications and then sends them to manufacturers around the world. The manufacturers return samples to demonstrate they can meet the specs and submit a price for IKEA's review. Given this situation, in what stage of the buying process is IKEA?

A) open bid evaluation
B) proposal solicitation
C) supplier selection
D) quotation evaluation
E) e-procurement evaluation