What is the answer?

GDP is $7 trillion. If consumption is $4.2 trillion, investment is $1.4 trillion, and government purchases are $2.1 trillion, then Select one: O a. exports are equal to imports. O b. exports exceed imports by $0.7 trillion. O c. imports exceed exports by $0.7 trillion. O d. exports are equal to $0.7 trillion. Clear my choice Check