Which a statement about exothermic and endothermic reactions is correct?

Question

Accepted Answer

In an endothermic reactions, energy is released when bound from but more energy is used to break bonds.

Answer

In an endothermic reactions, energy is used to break bonds but no energy is released when bonds form.

Answer

In an exothermic reactions, energy is released both by breaking and by forming bonds.

Answer

In an exothermic reactions, energy is released when bonds form but no energy is needed to break bonds.