According to the author, what is the impact of failure on a person?

• A. A person emerges wiser and stronger implying that he is secure in his ability to survive.
• B. A person realises that happiness in life does not depend on the achievements or acquisitions.
• C. A person realises that his qualifications and CV are not his life.
• D. A person realises the strength of his relationships by identifying his true friends.