During Initial Verification the Three Conditions Which Must Be Verified

During initial verification the three conditions which must be verified as stated in BS7671 are

A) Polarity, R1 + R2 and all materials compliant with BS
B) Environment, utilization and construction
C) Installed equipment is of the correct type and complies with appropriate BS. (not BS 7671) ,All of the fixed installation has been correctly selected and erected and it is not visibly damaged or defective
D) Installed equipment works correctly, all circuits are RCD protected and all equipment installed in zone 1 of a bathroom is to IP4X