Which of the Following Statements Is/are CORRECT

Multiple Choice

Which of the following statements is/are CORRECT?
1) Chemical reactions result in the gain,loss,or rearrangement of valence electrons.
2) For main group elements,the number of valence electrons equals eight minus the element's group number.
3) Core electrons are not involved in bonding or in chemical reactions.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 1,2,and 3