List one variable declaration in the code, along with the line number where you found the declaration. Why did the programmer declare it as a...

Please re-enter your item ID. ");

85.                 keyboard.nextLine();

86.                 itemID = -1;   

87.             }

88.             

89.         } while (itemID != 0); //Check if exit condition has been met

90.         if(totalAmount >= AMOUNT_TO_QUALIFY_FOR_DISCOUNT)

91.         {

92.             discountAmount = totalAmount * DISCOUNT_RATE;

93.         }

94.         else

95.         {

96.             discountAmount = 0;

97.         }

98.         System.out.println("");

99.         System.out.println("You selected "+itemCounter+" items to purchase.");

100.                       System.out.println("Your sales total $"+totalAmount);

101.                       System.out.println("Your discount amount is $"+discountAmount);

102.                       System.out.println("Your sales tax is $"+totalTax);

103.                       System.out.println("The total amount due is $"+(totalAmount - discountAmount + totalTax));

104.                       System.out.println("");

105.                   }

106.               }