<prompt> All statements about papillary thyroid cancer are true except:It is the most common subtype of thyroid cancerThe most common variant, and the one most liable to misdiagnosis is follicular variantIs not associated with radiation as a risk factorDiagnosis is made by the presence of nuclear finding and not on papillae formation  <response>: Discussing options one by one: OPTION 1 - TRUE - Papillary thyroid cancer is most common subtype of thyroid cancer OPTION 2 - TRUE - Follicular variant of papillary cancer is most common type is easily misdiagnosed as follicular ca. OPTION 3 - FALSE - RET-PTC gene mutation radiation exposure are most impoant risk factors. OPTION 4 - TRUE - Its diagnosis is made by presence of nuclear finding like Orphan Annie eye nuclei, intranuclear inclusions pseudo-inclusions ,intranuclear grooves not on papillae formation. 