Answer the following multiple choice question.

Q. Who wrote the book "To Kill a Mockingbird"?
A. Mark Twain
B. Harper Lee
C. Charles Dickens
D. Ernest Hemingway
B. Harper Lee wrote the book "To Kill a Mockingbird."
Complete the following task based on the instruction and optional input provided.### Instruction:
Answer the following multiple choice question.

Q. Who wrote the book "To Kill a Mockingbird"?
A. Mark Twain
B. Harper Lee
C. Charles Dickens
D. Ernest Hemingway

### Output:
B. Harper Lee wrote the book "To Kill a Mockingbird."