Which of the following answer best describes the effect of alliteration in the following line from yeats’ “the lake isle of innisfree”?

i hear lake water lapping with low sounds by the shore

a. by repeating the “l” sound, the poet is striving to create a gentle, lulling effect that imitates the musicality of the waves

b. the “l” sound just happens to be there; the poet did not intend any significance

c. he used the “l” sound to remind the readers of the lake

d. the “l” sound is there for emphasis