The enumeration order becomes implementation dependent and non-interop

1.	The enumeration order becomes implementation dependent and non-interoperable if:
A.	If the object inherits enumerable properties
B.	The object does not have the properties present in the integer array indices
C.	The delete keyword is never used
D.	Object.defineProperty() is not used
Answer» B. The object does not have the properties present in the integer array indices

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