(b) Code an if else statement to check the number of hours worked and display appropriate message. Assume that the number of hours is worked is stored in a variable named $total_hours. If hours worked is 40, display a message You have worked sufficient hours keep going. If hours worked is less than 40, display a message You need to put in more hours. If hours worked is more than 40, display a message You are working too hard it is time for a bonus.