This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Combination clasp consists of 
Select and explain. 
A. Wrought retentive and reciprocal, B. Cast retentive and reciprocal, C. Wrought retentive and cast reciprocal, D. Cast retentive and wrought reciprocal
C: Wrought retentive and cast reciprocal
Answer: C: Wrought retentive and cast reciprocal 
Explanation: Another strategy to reduce the effect of the Class I lever in distal extension situations is to use a flexible component in the "resistance arm, " which is the strategy employed in the combination clasp. The combination clasp consists of a wrought wire retentive clasp arm and a cast reciprocal clasp arm.