The correct option is A Dicot root
When xylem and phloem within a vascular bundle are arranged in an alternate manner on different radii, the arrangement is called radial.
In Dicot roots 2 to 5 vascular bundles are commonly seen in the radial arrangement.
Although, radial arrangement is seen in monocot roots, they contain 8 or more more vascular bundles.
Both monocot and dicot stems have conjoined vascular bundles.