Which of the Following Is True

Multiple Choice

Which of the following is true?
i.The easier it is to find substitutes for a good,the more price elastic the demand for the good is.
ii.The demand for a good is more price elastic the smaller the proportion of income spent on it.
iii.If demand is price elastic,lowering the price leads to a decrease in total revenue.

A) only i
B) only ii
C) only iii
D) i and ii
E) i and iii