(b) Refer to the code below to answer questions (b.1) and (b.2): $i = 4; while($i <= 7){ if($i%2 != 0) echo "$i - Odd number "; else echo "$i - Even number "; $i++; } (b.1) What is the output generated by the given code? (4 marks) (b.2) Rewrite the code to use for loop instead of while without changing its logic. (4 marks)