Action Company's Standard Cost Is $600,000 $$\begin{array} { l l } \text { April } & \$ 520,000 \\\text { May } & \$ 550,000 \\\text { June } & \$ 575,000\end{array}$$

Multiple Choice

Action Company's standard cost is $600,000.The allowable deviation is ±10%.Its actual costs for three months are as follows: $$\begin{array} { l l } \text { April } & \$ 520,000 \\\text { May } & \$ 550,000 \\\text { June } & \$ 575,000\end{array}$$ What are the upper and lower control limits,respectively?

A) $660,000 and $600,000
B) $660,000 and $540,000
C) $640,000 and $500,000
D) $575,000 and $520,000