Geometry

Question Analysis  
This question involves determining similarity between cones by comparing ratios of corresponding linear dimensions.
The main focus is on ensuring all relevant dimensions (radius and height, or radius and slant height) maintain consistent proportionality.  

Key Concept Explanation  
For two cones to be similar, the ratio of their radii must equal the ratio of their heights (or slant heights).
This ensures the cones maintain the same shape, differing only in scale.  

Step-by-Step Solution  
Option A:  
 Radius ratio:  
 Height ratio:  
 Ratios are equal → Similar  
Option B:  
 Radius ratio:

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