What is meant by totipotency?

• A
  The ability of a cell to generate a complete organism from a root or its part.
• B
  The ability of a cell to generate a complete organism from a leaf or its part.
• C
  The ability of a cell to generate a complete organism from any part of the body.
• D
  All of the above $(A)$,$(B)$,and $(C)$.