The following figure is old typical dicot root, Identify A, B, C and D

Options

A. A – Secondary phloem, B – Primary xylem, C – Primary phloem, D – Vascular cambium
B. A – Primary phloem, B – Primary xylem, C – Secondary phloem, D – Vascular cambium
C. A – Secondary phloem, B – Vascular cambium, C – Primary phloem, D – Primary xylem
D. A – Primary phloem, B – Vascular cambium, C – Secondary phloem, D – Primary xylem

Answer

D

Explanation

In secondary growth of dicot root cambium ring present this cuts phloem outside and xylem inside.