What word is missing below (fill in the __________).
Write a method definition called increaseTemperature which takes 2 integers as formal parameters. The two parameters represent the upper and lower targets.The method returns the different between the upper and lower targets as an integer.

public static _________ increaseTemperature(int upper, int lower)
    return upper - lower;
  • upper – lower

  • void

  • int

  • boolean