Provide the line structure of the following compound:

Indicate whether it has a ketone functional group, an aldehyde functional group, or neither.

• A. Its line structure is shown below.
  
  It has a ketone functional group.
• B. Its line structure is shown below.
  
  It has an aldehyde functional group.
• C. Its line structure is shown below.
  
  It has an aldehyde functional group.
• D. Its line structure is shown below.
  
  It has neither a ketone nor an aldehyde functional group.

Answer: (A)