Question

Which statement is true about Shakespearean sonnets?
A)Shakespearean sonnets have two sections, one with 8 lines called the octave and one with 6 lines called the sestet.
B)Shakespearean sonnets have three quatrains and a couplet.
C)Usually the topic or focus of the Shakespearean sonnet shifts after the first part.
D)Shakespearean sonnets follow an A-B-B-A A-B-B-A rhyme scheme.