You Read in the National Post That "The Dollar Strengthened

You read in The National Post that "the dollar strengthened against all foreign currencies yesterday." This statement means that:

A) It takes more British pounds to buy one dollar.
B) It takes more dollars to buy one British pound.
C) The dollar depreciated relative to the pound.
D) The British pound appreciated relative to the Euro.
E) The British pound depreciated relative to the Euro.