Correct statements among the following areA) Actinoids do not show variable oxidation statesB) Highest oxidation state shown by actinoids in their compounds is +7C) All actinoids are radio active elementsD) Actinoids react with acids and alkalies

A) Actinoids show variable oxidation states due to a very small energy difference between 7s, 6d and 5f electrons.B)Np and Pu  exihibit maximum oxidation state of +7 in their compoundsC) Actinoids from Z=95 -103 are synthetic elements. Z> 82….are all radioactive elementsD)Actinoids are truely metallic, they react with acids but cannot react with alkalies.