Whe n th e pric e o f a goo d o r servic e changes,
A.
th e deman d curv e shift s i n th e opposit e direction
B.
th e suppl y curv e shift s i n th e opposit e direction
C.
th e suppl y curv e shift s i n th e sam e direction
D.
ther e i s a movemen t alon g a give n suppl y curve