Which of the following below applies to the addition of nucleophiles toalpha, beta-unsaturated carbonyl compounds?
1) The nucleophile can attack either at the carbonyl C atom or else at the beta C atom as both of these have a partial positive charge.
2) Nucleophilic attack at the beta C atom will defer the so-called Michael addition product.
3) Both 1 and 2.
4) Neither 1 nor 2.