Below is a table of the prices of quarts of milk from 2000 to 2001, and from 2002 to 2003. in this table, the price of a quart of milk changed from 2000 to 2001 by %, and by % from 2002 to 2003? year price year price 2000 $.80 2002 $1.00 2001 $1.00 2003 $.80 a. + 25%, -25% b. +25%, -20% c. +25%, -15% d. +15%, -15%