Select the Code Below That Uses CSS to Configure a Class

Select the code below that uses CSS to configure a class called "offer" with blue text that uses the Arial or sans-serif font typeface .

A) #offer { color:blue; font-family:Arial,sans-serif;}
B) .offer { color:blue; font-family:Arial,sans-serif;}
C) .offer { text:blue; font-family:Arial,sans-serif;}
D) #offer { text:blue; font-family:Arial,sans-serif;}