Which of the following would be an example of chronic sorrow?

Which of the following would be an example of chronic sorrow?

• A husband loses his wife and celebrates their anniversary each year.
• A wife loses her mother and relies on her husband to take care of the funeral decisions.
• A sister feels the pain of loss on the anniversary of her brother's death each year thereafter.
• A family suffers a loss and grieves for almost 2 years.