Evan is training for a race on saturday. he wants to run a total of 12 miles total for the week before the race. on monday he ran 3 miles, on tuesday he ran 5 miles, he took wednesday and friday off. how many miles does he need to run on thursday to meet his goal? 
 a.0 miles- he has already met his goal. 
 b.1.5 miles 
 c.2 miles 
 d.4 miles