Which one of the following option shows the correct labelling of the parts marked as A, B, C and D in the given figure of a typical dicot root?
- AA – Primary phloem, B – Vascular cambium, C – Secondary phloem, D – Primary xylem
- BA – Secondary phloem, B – Vascular cambium, C – Primary phloem, D – Primary xylem
- CA – Primary phloem, B – Primary xylem, C – Secondary phloem, D – Vascular cambium
- DA – Secondary phloem, B – Primary xylem, C – Primary phloem, D – Vascular cambium
✓ Correct answer: A
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