Which statement about lifetimes is false?

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Question:Which statement about lifetimes is false?

1.Lifetimes were redundantly specified in previous version of Rust.

2.Lifetimes are specified when a struct is holding a reference to a value.

3.Lifetimes are specified when certain values must outlive others.

4.Lifetimes are always inferred by the compiler.

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  1. Which statement about lifetimes is false?
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