Step-by-step Solution:

Pattern Analysis

The series contains three independent patterns working simultaneously:

• 
  First Letter Pattern: The first letter of each term moves backward through the alphabet.
  
  Z, Y, X, W, ... → The next two letters are V and U.
  


• 
  Second Letter Pattern: The second letter of each term moves forward through the alphabet.
  
  A, B, C, D, ... → The next two letters are E and F.
  


• 
  Number (Subscript) Pattern: The number alternates between subtraction and addition, with the amount increasing by 1 each time.
  
  5 (-1) → 4 (+2) → 6 (-3) → 3
  
  Following this, the next two operations must be +4 and -5:
  
  
  
  • 3 + 4 = 7
  
  
  • 7 - 5 = 2
  
  
  
  The next two numbers are 7 and 2.
  

Constructing the Next Terms

By combining the results from the three patterns, we can build the next two terms in the series:

1. Term 5: V (from pattern 1), E (from pattern 2), 7 (from pattern 3) → V7E


2. Term 6: U (from pattern 1), F (from pattern 2), 2 (from pattern 3) → U2F

Final Answer: The correct option is C. V₇E and U₂F