Case 1: Khalid is a Malaysian resident who has recently submitted his tax returns. He claims to have worked as a consultant for various international firms. There is a particular transaction under scrutiny: a consultancy fee from GlobalTech, a company based in New Zeland, which was allegedly for a project in Malaysia. The payment details, amounting to RM500,000, were discovered in a bank statement from his New Zealand bank account. Additionally, a lease agreement was found indicating Khalid's ownership of a property in Kuala Lumpur and a subsequent rental income of RM50,000 annually. Upon review, the Inland Revenue Board of Malaysia (IRBM) flagged these discrepancies and has requested Khalid to produce supporting documents to validate his claims. Questions: Based on the information provided, list the types of supporting documents or evidence that Khalid should provide to validate his consultancy service for GlobalTech. 1. 2. How should Khalid demonstrate that the consultancy fee was ei