Red Cross Company is a privately owned business that sells medical product and devices to hospitals, clinics and the public. Certain changes have occurred in Red Cross during the year undergoing the audit. Which of the following changes will decrease planned detection risk? Group of answer choices An expert was hired to help determine the value of the ore content in ending materials inventory A new inventory control system has been installed that reduces the access of unauthorized parties Excess cash was used to purchase complex derivatives An internal audit department has been established