Read the following statements carefully:
1.Researchers have discovered a new sensory organ in the skin that is able to detect painful mechanical damage, such as pricks and impacts, an advance that may help develop novel painkillers.
2.Almost one person in every five experiences constant pain and there is a considerable need to find new painkilling drugs, according to research published in the journal Science.
3.However, sensitivity to pain is also required for survival and it has a protective function.
Which of the above statements is/are correct?