A company predicted that the learning rate for production of a new product would be 80%. The actual learning rate was 75%. The following possible reasons were stated for this:

(i) The number of new employees recruited was lower than expected

(ii) Unexpected problems were encountered with production

(iii) Unexpected changes to Health and Safety laws meant that the company had to increase the number of breaks during production for employees

Which of the above reasons could have caused the difference between the expected rate of learning and the actual rate of learning?

A.All of the above

B.(ii) and (iii) only

C.(i) only

D.None of the above