An element with atomic number 30 is a
(A) Representative element
(B) Transition element
(C) d-block element
(D) -block element

La ( lanthanum ) having atomic number "57" is a member of : S-block elements P-block elements d-block elements f-block elements

Some statements are given below. Among them, the correct statement are a) All transition elements are d-block elements b) All d-block elements are transition elements c) Helium is a inert gas d) Aluminium is a respresentative element