A two-dimensional array has been defined to hold the quantity of each of five different healthy snack products sold in a shop during the past three months. The array is declared as follows:

sales = [ [0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0] ]

Indexing of the array starts at 0, so the sales of the first product in the second month is held in sales[1][0].

(a) Write a statement to assign the value 13 to the fifth product in the third month.