Select the incorrect statement for centrioles

Submicroscopic, microtubular and subcylindrical structures

Each centriole has a cartwheel organisation having a whorl of nine peripheral triplet fibrils of tubulin (9 + 2) tilted at an angle of 40⁰

The three subfibres of a triplet from outside to inside are designated as C, B and A

These are mostly present in animal cells and flaellated organisms and structures like spores, and gametes, etc