Read the text and answer the question.
Some people think that friends should always agree on everything. However, true friendship is about respecting differences. For example, Ali loves sports, but his best friend Mehmet prefers reading books. They don't force each other to change. They enjoy spending time together even when they do different activities. This makes their friendship stronger.
What is the main idea of the text?
A)Friends should have the same hobbies.
B)Respecting differences is important in friendship.
C)Sports are more important than books.
D)Friends should force each other to change.