The given answer is correct.

Intra means within. Intrafascicular cambium is present in the vascular bundles of dicot stems. It is present in between primary xylem and primary phloem. It is a primary meristem as it is derived from embryonic meristems. It is present in the plant from the very beginning only so it is primary in origin . It produces primary xylem on inner side and primary phloem on outer side.