The following reaction occur during cellular respiration:
Pyruvate → Acetyl CoA + CO₂ (ΔG =-29 kJ/mol)
Is this reaction exergonic or endergonic? Does it produce a phosphate group that later yields energy by giving up a phosphate group? 

The reaction is endergonic and involves the production of a high-energy molecule.

The reaction is exergonic and doesn't involve the production of any high-energy molecules.

The reaction involves the production of high-energy molecules but isn't either exergonic nor endergonic.

The reaction neither involves the production of any high-energy molecules nor falls under either category.