Option C:  
Option D:  
Option F:  
Solution:
Given expression: 
To find which expression is equivalent to the given expression.
Let us solve this using exponent rule: 
Option A: 

It is not equivalent expression.
Option B: 

It is not equivalent expression.
Option C:  

It is equivalent expression for the given expression.
Option D:  

It is equivalent expression for the given expression.
Option E:  

It is not equivalent expression.
Option F:  

It is equivalent expression for the given expression.
Hence  are the equivalent expressions.
 are the equivalent expressions.
Option C, Option D and Option F are correct answers.