Which of the following statements about exothermic and endothermic reactions is correct?
- AIn an endothermic reaction, energy is used to break bonds but no energy is released when bonds form.
- BIn an endothermic reaction, energy is released when bonds form but more energy is used to break bonds.
- CIn an exothermic reaction, energy is released both by breaking and by forming bonds.
- DIn an exothermic reaction, energy is released when bonds form but no energy is needed to break bonds.