Stephen graduates from college and his income increases by $25,000. Nothing else changes. Stephen decreases the quantity of ramen noodles and pretzels that he buys and increases the quantity of hot caramel apple cider that he buys. For Stephen, O A. ramen noodles and pretzels are normal goods O'B. ramen noodles and hot caramel apple cider have become substitutes C. hot caramel apple cider is a normal good O D. hot caramel apple cider and pretzels have become substitutes