Subject: mathqa
Question: if the radius of a cylinder is doubled and so is the height , what is the new volume of the cylinder divided by the old one ?
Option: 
A: 8 .', 'b ) 2', 'c ) 6', 'd ) 4', 'e ) 10']
B: 6', 'd ) 4', 'e ) 10']
C: 10']
D: 2', 'c ) 6', 'd ) 4', 'e ) 10']
Answer: A