The RR Corporation had cash flow from oper
题型：单项选择题
问题：
The RR Corporation had cash flow from operations of $ 20 million. RR purchased $ 5 million in equipment and sold $ 3 million of equipment during the period. Cash flows from financing were $ 2 million. What is RR' s free cash flow for the period（）
A. $18.
B. $22.
C. $20.