Please answer question C only.

Given the definition of Laptop class as follows: \begin{tabular}{l} public class Laptop \\ \{ \\ private string brand; //Hp, Acer, ASUS \\ private double price; // price per unit \\ private int RAM; //memory space in GigaByte (GB), e.g: 2,4 \\ private int usBport; /umber of USB port, e.g: 2,3,4 \\ /ormal constructor: public Laptop (String, double, int, int) \\ // printer method: tostringo \\ //processor method: upgradeRAM(int) \\ //accessors: getBrand (), getPrice (), getRAMO, getUSB() \\ \hline \end{tabular} Write the definition of the following methods: a) A normal constructor that initializes all data members with the given values through its parameter (brand = Acer, price =RM3,999,RAM=4Gb, USB Port =2 ). (3 marks) b) Write the accessor method getBrand () to get the laptop brand and accessor method getUSB ( ) to get number of USB port. (3 marks) c) A processor method named upgradeRAM with return value is (int) that receive the size of RAM to be upgraded as its parameter. This method will determine and return the price of RAM based on the following table