For the school intramurals, a group of students prepared 23 and one-half liters of lemonade to sell. At the end of the day, 3 and five-eighths were left. How many were sold?
a) 19 and 7/8 liters
b) 20 and 1/2 liters
c) 22 and 3/4 liters
d) 19 and 3/4 liters