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Stephen graduates from college and his income increases by $30,000. Nothing else changes. Stephen decreases the quantity oframen noodles and chocolate chip cookies that he buys and increases the quantity of cla For Stephen,

A. ramen noodles and chocolate chip cookies are inferior goods
B. ramen noodles and classical music CDs have become substitutes
c. ramen noodles and chocolate chip cookies have become complements
D. classical music CDs and chocolate chip cookies are normal goods