a) (5 points) Check these two different ways of initializing instance variables.

public class Option1 { private int a; public Option1() { a = 10; } }

public class Option2 { private int a = 10; }

Discuss in your own words which way would you prefer to initialize instance variables. In which circumstances, Option 1 is preferred over Option 2? In which circumstances, Option 2 is preferred over Option 1? Cite if needed.

b) (5 points) Explain the purpose of a method parameter. What is the difference between a parameter and an argument? Cite if needed.

c) (5 points) What is the difference between a local variable and an instance variable (class attribute)? Cite if needed.

d) (5 points) Write a Java application that uses looping, if statements, and Math library (for absolute value and power) to print the following table of values (notice that N = 0 is skipped in the table):

N	10*N	ABS(N)	N^2
-2	-20	2	4
-1	-10	1	1
1	10	1	1
2	20	2	4