77-- Given the outermost electronic configuration of the following ions: $\mathrm{A^+: 3p^6}$, $\mathrm{E^{3+}: 3d^5}$, $\mathrm{A^+: 3p^6}$, $\mathrm{X^{2-}: 3p^6}$ and $\mathrm{D^-: 4p^6}$, which of the following statements is correct?
A: The number of electron shells of elements A and E in the periodic table, with the number of valence electrons of element X, are equal.
B: The number of exchanged electrons in 0.2 mol of the compound formed from the reaction of A and X under suitable conditions is $1.8 \times 06 \times 10^{24}$.
C: Negative ions, unlike positive ions, have a noble gas electronic configuration in the periodic table.
D: The ratio of the number of atoms obtained from the reaction of E and D to the number of atoms obtained from the reaction of A and X can be 2.
- [(1)] ``A'' and ``D'' (2) ``A'' and ``C'' (3) ``B'' and ``C'' (4) ``B'' and ``D''