Answer:
Since elasticity is 6.4, a positive figure,it is normal good and the fact that it is greater than one means it is elastic,hence option A is correct
Explanation:
The formula for income elasticity of demand is given as:
/(new quantity-old quantity)//(old price+new price)/2)/(New income-Old income)/(old income+new income)/2)
New income=$33,000
Old income=$31,900
New quantity =5 times
Old quantity=3 times
Hence=(5-3)/(3+5)/2)/(33500-31900)/(31900+33500)/2)
Elasticity=6.45