Hamlet's line in the following passage before going to speak to his mother (3.2.429) mainly suggests that
Let me be cruel, not unnatural. I will speak daggers to her, but use none.
A. he will threaten her with a weapon
OB. he will accuse her of being cruel to him
OC. he will confront her but not hurt her
OD. he will ask her to kill Claudius in revenge