Which of the following statements is $NOT$ true according to the principles of green chemistry?

• A
  It is good to use the technique of protection and deprotection of functional groups in organic synthesis.
• B
  Use of chemicals derived from plant resources is better than crude oil.
• C
  Use of biodegradable pesticides is advantageous.
• D
  Use of supercritical $CO_2$ as a solvent is better than organic solvents.