Jithesh & Co was the auditors of Selve Sdn Bhd's financial statements for the year ended December 31, 2018. On November 1, 2017, Selve notified Jithesh & Co that they are changing auditors and that Jithesh & Co services were being terminated. 
On November 5, 2017, Selve invited Haqim, a senior partner of Haqim, Hamdi & Co., chartered accountants, to make a proposal for an engagement to audit its financial statements for the year ended December 31, 2019.
a. Explain thoroughly the procedures Haqim, Hamdi & Co should perform before accepting the engagement?
b. What are the additional procedures should Haqim, Hamdi & Co after accepting the engagement of a new client?
c. State the benefits derived from preparing an Engagement Letter before the audit engagement？

d. List 4 elements of Engagement Letter？