Jose purchased stock last year as follows:

Month	Shares	Total Cost
September	60	$ 6,000
October	75	$7,500
November	85	$9,000

In December of this year, Jose sells 100 shares for $12,950. Jose cannot specifically identify the stock sold. The basis for the 100 shares sold is

A) $7,500

B) $10,000.

C) $10,500.

D) $12,250.