Which of the following factors should be considered when utilizing pest control equipment and materials.

a. The nature of the infestation or pest control task to be done - the type of pest/vermin to be treated, where it is, extent of the problem
b. Requirements imposed by the Pest Control Support Program in the FSP, including reporting procedures
c. Reporting procedures only when it's a repeated incidence
d. Application of equipment and materials following manufacturers' advice.
e. The type of food products that are being impacted on.