if a good takes up significant share of consumers budget it will be
a. Less elastic
B. More elastic
C. Perfectly elastic
D. Unitary elastic
And why

As we know price elasticity of demand depends on various factors. Such as:

• Nature of goods
• Availability of substitutes
• Diversity of uses
• Postponement of use
• Income level
• Price level
• Time period etc.

Now if there is a good which takes up significant share of consumers budget then it implies it can not be any necessaries, comfort or jointly demanded goods. It must be a luxurious good. 
Luxuries like Air Conditioner, costly furniture, fashionable garments etc. have greater than unitary elastic demand. Which implies when change in quantity demanded in response to change in price of the commodity is such that the total expenditure on the commodity increases when price decreases, and vice versa.
Here E_d > 1