Quality control

There is one question in my textbook. Its quite confusing.

Question )

True or false.

Statement 1: where deficiencies in quality control procedures are identified the firm should take action such as providing additional training or increasing the frequency of quality control reviews . True

Statement 2: The firm only needs to act on quality control deficiencies identified by an external quality control review such as that performed by ACCA. False

Statement 3: The firm should monitor its quality control procedures and policies on a regular basis to ensure they are working effectively : True

Statement4:Every person within the audit firm has a responsibility to ensure quality is adhered to :True

But the answer key shows:

False
True
False
False