Based on a hotel in Singapore, what are the key assertions involved for the valuation, impairment, disposal, and addition of assets where the risk of material misstatements is significant?
a) Existence, completeness, rights and obligations, and valuation
b) Completeness, accuracy, rights and obligations, and classification and presentation
c) Existence, accuracy, valuation, and classification and presentation
d) Existence, rights and obligations, completeness, and classification and presentation

What are the audit procedures (test of control, test of detail, or substantive procedures) that need to be performed for auditing property, plant, and equipment?
a) Test of control
b) Test of detail
c) Substantive procedures
d) All of the above