In sonnet 75 (by Edmund Spenser) after the speaker writes his loves name upon the sand why does the woman refer to him as a vain man

A. She believes that his efforts are futile because she will eventually does and be forgotten

B. She believes he only weird her name in order to be in hey good graces

C. She believes he wants her to be wiped out by the tide

D. She believes he doesn't really love her as much as he claims