Task: Question Answering
Input (English): Question: For wound care and depending on their evolution, there is a wide variety of dressings on the market. From the following statements, point out the correct one: 
 Options:  <1> The gauzes always keep the wound in humid conditions. <2> The hydrogel dressing is used to maintain a dry wound. <3> Transparent films are used for infected wounds. <4> Hydrocolloid dressings are used in moist environment cures. <5> The foam dressing is used to maintain a dry wound environment.
Output (English): 4