• Biochemical Classification of Carotenoids:
• Carotenoids are $C_{40}$ lipophilic isoprenoid pigments synthesized from eight $C_5$ isoprene units (via tail-to-tail condensation of two $C_{20}$ geranylgeranyl diphosphate molecules).
• Therefore, carotenoids belong to the category of tetraterpenoids ($C_{40}$), NOT triterpenoids ($C_{30}$, 6 isoprene units like squalene).
• Statements 1, 2, and 3 correctly describe their 8-isoprene origin, polyene lipophilicity, and characteristic absorption in the blue-green spectrum ($400 - 550\text{ nm}$).
• Conclusion: Statement 4 ("Belongs to the category of triterpenoids") is not correct (Option 4).

Correct option: (4) Belongs to the category of triterpenoids