Between the octave and the sestet, a shift in ideas occurs when the speaker

A. realizes the full impact the loss of the woman has on his life.
B. decides to take a long sea voyage to get away from the woman.
C. chooses to tell the woman that their difficult relationship is over.
D. resolves to give up his career in the arts because of the woman.

A. realizes the full impact the loss of the woman has on his life.