Question: Under what circumstance should we hash a message before signing it with digital signature? ( Choose 1 ) When the message is too long, causing

Under what circumstance should we hash a message before signing it with digital signature? (Choose 1)
When the message is too long, causing overhead for asymmetric encryption.
When the sender wants to hide the contents of the message.
When the signature needs to be encrypted for security.
When the message size is small enough to be processed directly.
Under what circumstance should we hash a message

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