世贸组织的原则最重要的是 [ ]

A．非歧视原则

B．市场准人原则

C．互惠原则

D．公平竞争与公平贸易原则

During periods of decreasing prices, what type of inventory accounting method should a firm use to report higher net income The company should use:（）

A. FIFO because during periods of decreasing prices, the COGS will be lower, resulting in a higher net income.  

B. FIFO because during periods of decreasing prices, the COGS will be higher, resulting in a higher net income. 

C. LIFO because during periods of decreasing prices, the COGS will be lower, resulting in a higher net income.