Answer:
The correct answer is option C.
Step-by-step explanation:
The Food and Drug Administration recommended that Americans avoid eating bagged raw spinach in the wake of an outbreak of E. coli bacteria. The consumers turned to arugula. This means that both are substitute goods.
Substitute goods have positive cross-price elasticity. This implies that an increase in the price of a good will lead to an increase in the demand for its substitute. This is because consumers always prefer a cheaper substitute.