Price elasticity of demand(Multiple choice questions)?

Question

If the quality demand of beef increases by 10% when the price of chicken goes up by 8%, the cross-price elasticity of demand between beef and chicken is
A) perfectly inelastic.
B) inelastic.
C) elastic.
D) perfectly elastic

I also want to know what is the difference between
1. perfectly inelastic and inelastic
2. perfectly elastic and inelastic

Thanks

Answer 1

C) elastic
Perfectly inelastic means that no matter what the increase in price is, the quantity demanded of a good remains the same. Such an example is insulin for diabetic patients. Inelastic on the other hand, means that quantity demanded will be affected but the elasticity is less than 1. Denoted by a steep curve on the graph.

Perfectly elastic means that a light change in price will swing the demand completely. Products will usually be homogenous and easily substitutable.

Answer 2

cross elasticity of demand measures the responsiveness of a given change in demand of a commodity say Y to a given change in price of another commodity X. If cross Ed is positive, then the goods are said to be subtitutes and in case of a negative value, the goods are said to be complements....
Perfectly inelasticity of demand is measures the degree of responsiveness for a given change in demand for a good Y to a given change in price of a commodity Y. It means that a change in price of Y will bring about a less than proportionate change in Y.

That's all i remember.
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Answer 3

Who the hell would want to eat elastic beef or chicken. The question is moot.

Answer 4

B ...I'm guessing