Barker Company paid cash to purchase two identical inventory items. The first purchase cost $18.00 cash and the second cost $20.00 cash. Barker sold one inventory item for $30.00 cash. Based on this information alone, without considering the effect of income tax,:

A. cash flow from operating activities is $11.00 assuming a weighted average cost flow.

B. cash flow from operating activities is $12.00 assuming a FIFO cost flow.

C. cash flow from operating activities is $10.00 assuming a LIFO cost flow.

D. the amount of cash flow from operating activities is not affected by the cost flow method.