Suppose disposable income increases from $5 trillion to $6 trillion. As a result, consumption expenditure increases from $4 trillion to ________. This result means the MPC equals ________. (假设可支配收入从5万亿美元增加到6万亿美元。因此，消费支出从4万亿美元增加到 _ _ _ _ _ _ _ _。这个结果意味着 MPC 等于 _ _ _ _ _ _ _ _。——中文由在线翻译而来，仅供参考)
选项：

A: $4.5 trillion; 4.504.5万亿美元; 4.50
B: $5 trillion; 0.805万亿美元; 0.80
C: $4.8 trillion; 0.804.8万亿美元; 0.80
D: $6 trillion; 1.006万亿美元; 1.00