(A) The sale of PDAs is expected to continue to rise for the remainder of the fiscal year.
(B) The sales of PDAs are expected to continue to rise for the remainder of the fiscal year.
According to the on-line dictionary (See below), I think B is correct and better than A. Am I right? But the book’s example is A, why?
http://dictionary.cambridge.org/define.asp?key=69529&dict=CALD sale (SELL) Show phonetics
noun
1 [C or U] an act of exchanging something for money:
The sale of cigarettes/alcohol is forbidden.The building company get 10% commission on each house sale.I haven't made a sale all morning.They'll drop the price rather than lose the sale.
See also sell
.
2 [C ] an occasion when things are sold, especially by an organization such as a school or church, in order to make money for the organization:
a charity/Christmas/book sale
3 [C ] an
auction:
a sale of antique furniturea cattle sale
sales Show phonetics
plural nounthe number of items sold:
Sales this year exceeded the total for the two previous years.
See also telesales.
sales Show phonetics
group noun the department of a company that organizes and does the selling of the company's products or services:
He works in Sales.the sales department/manager