Assertion (A) Secondary growth in dicot roots occur with the help of vascular cambium and phellogen. Reason (R) Vascular cambium is formed from conjuctive parenchyma and part of pericycle.

• A. If both Assertion and Reason are true and Reason is correct explanation of Assertion.
• B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• C. If Assertion is true but Reason is false.
• D. If both Assertion and Reason and false