Show which bonds are broken and which bonds are formed during the following reaction. Also, indicate whether each of these bonds is a σ bond or a π bond.

Broken: O—H σ bond of the alcohol and Si—Cl σ bond of the silyl ether
Formed: O—Si σ bond of the chlorotrimethylsilane and H—N σ bond of the triethylamine

Broken: O—H σ bond of the alcohol and Si—Cl σ bond of the chlorotrimethylsilane
Formed: O—Si σ bond of the silyl ether and H—N σ bond of the triethylamine

Broken: O—Si σ bond of the silyl ether and H—N σ bond of the triethylamine
Formed: O—H σ bond of the alcohol and Si—Cl σ bond of the chlorotrimethylsilane

Broken: O—Si σ bond of the chlorotrimethylsilane and H—N σ bond of the triethylamine
Formed: O—H σ bond of the alcohol and Si—Cl σ bond of the silyl ether