What is the purpose of the names of the girls in this poem?

Responses
A The names imply that the girls are sisters.The names imply that the girls are sisters.
B The names support the rhyme scheme of the poem.The names support the rhyme scheme of the poem.
C The names suggest that the girls are unfamiliar with sea creatures.The names suggest that the girls are unfamiliar with sea creatures.
D The names are alliterative and serve to convey a lighter mood to the poem.

D The names are alliterative and serve to convey a lighter mood to the poem.