Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent?

Out of all the elastomers, natural rubber has the longest elongation r

1.	Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent?
A.	1-1000
B.	1000-1500
C.	1500-2000
D.	2000-2500
Answer» B. 1000-1500