Which step(s) in the process of urine formation occur in the renal tubule? filtration secretion reabsorption filtration, secretion, and reabsorption secretion and reabsorption?

The correct answer is:  [E]:  "secretion and reabsorption" .

Note:
   
 Among the answer choices provided:

  [A]:  filtration ; 

  [B]:  secretion ; 

  [C]:  reabsorption; 

  [D]:  filtration, secretion, and reabsorption ; 

  [E]:  secretion and reabsorption ; 

Answer choice:  [E]:  "secretion and reabsorption"  [only] ;

  →   are the steps in the [process of urine formation] that occur in the "renal tubule" .

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I’m not really sure