During the electrophilic addition reaction of propene with bromine to form 1,2-dibromopropane, which types and numbers of covalent bonds are broken and formed in total?
Bonds broken: 1 σ1\ \sigma1 σ and 1 π1\ \pi1 π; Bonds formed: 2 σ2\ \sigma2 σ
Bonds broken: 1 π1\ \pi1 π; Bonds formed: 1 σ1\ \sigma1 σ
Bonds broken: 1 σ1\ \sigma1 σ and 1 π1\ \pi1 π; Bonds formed: 1 σ1\ \sigma1 σ and 1 π1\ \pi1 π
Bonds broken: 2 σ2\ \sigma2 σ; Bonds formed: 2 σ2\ \sigma2 σ