The regular price of an item at a store is p
p dollars. The item is on sale for
30
%
30% off the regular price.

Expression
W
:
0.3
p
W:0.3p
Expression
X
:
0.7
p
X:0.7p
Expression
Y
:
p
−
0.3
p
Y:p−0.3p
Expression
Z
:
p
−
0.7
p
Z:p−0.7p

Which two expressions represent the sale price, in dollars, of the item?
A
Expression XX and Expression YY
B
Expression WW and Expression XX
C
Expression WW and Expression YY
D
Expression YY and Expression ZZ