If the price of orange juice rises 10%, and as a result the quantity demanded falls by 10%, then one can conclude that the demand for orange juice

If the price of orange juice rises 10%, and as a result the quantity demanded falls by 10%, then one can conclude that the demand for orange juice
A)is perfectly elastic.
B)is inelastic.
C)has a unitary elasticity.
D)has a constant elasticity.