d. What is the rationale for the cash and receivables sereening? In other words, why is it that a fim's amount of cash and receivables must be below a certain threshold for it to be considered as Shari 'ah compliant? 3 marks) e. If a particular firm is well-known as a business which pollutes the environment, would the shares of this firm be considered as a Shari ah compliant stock? Explain