A. if statement (A) is the cause and statement (B) is its effect.
B. if statement (B) is the cause and statement (A) is its effect.
C. if both the statements (A) and (B) are independent causes.
D. if both the statements (A) and (B) are effects of independent causes.
Feedback (A) and (B) are referring to different aspects of economy. Hence, they are effects of independent causes.