Question

need help with this question. Thanks
What is the speaker’s motivation in Donne’s “A Valediction: Forbidding Mourning”?

to tell his beloved he is dying but not to mourn him
to assure his beloved that distance cannot weaken their love for each other
to reassure his beloved that, although he must leave, he will return
to reassure his beloved that he will never forget her, but he must leave