Which of the following is a difference between YAML and JSON? 

Answer options:

A. Users can comment in YAML but not in JSON
B. JSON only uses curly brackets, while YAML only uses square brackets
C. JSON is used in web development, while YAML is used solely in back-end systems.
D. YAML has been deprecated for JSON.

A

Reference: https://www.json2yaml.com/yaml-vs-json