Consider the following TempTest and Temperature class definitions. Which code segment is the best replacement for /* code to construct a valid temperature from user input */ in the main method of the TempTest class?

public class TempTest {
    public static void main(String[] args) {
        System.out.println("Enter temperature scale: ");
        String tempScale = ...; // read user input
        System.out.println("Enter number of degrees: ");
        double tempDegrees = ...; // read user input

        /* code to construct a valid temperature from user input */
    }
}

public class Temperature {
    private String scale; // valid values are "F" or "C"
    private double degrees;

    /** constructor with specified degrees and scale */
    public Temperature(double tempDegrees, String tempScale) {
        /* implementation not shown */
    }

    /** Returns true if tempDegrees is a valid temperature
     *  in the given temperature scale, false otherwise.
     */
    public static boolean isValidTemp(double tempDegrees, String tempScale) {
        /* implementation not shown */
    }

    // Other methods are not shown.
}