Consider the following class declaration. The changeWeather method is intended to update the value of the instance variable weather and return the previous value of weather before it was updated. public class WeatherInfo
{
private String city;
private int day;
private String weather;

public WeatherInfo(String c, int d, String w)
{
city = c;
day = d;
weather = w;
}

public String changeWeather(String w)
{
/ missing code /
}
}
Which of the following options should replace / missing code / so that the changeWeather method will work as intended?