Consider the following statements related to non-destructive testing of concrete:1. Indentation test is used to assess the quality of concrete.2. Resonant Frequency method is based on a laboratory test.3. Compressive strength of concrete is estimated through Pulse Velocity Measurement4. Dynamic Modulus of Elasticity is determined by a Sonometer Test.5. Thickness of concrete can be estimated by in-situ Rebound Hammer Test.Which of the above statements are correct?

Consider the following statements related to non-destructive testing o

1.	Consider the following statements related to non-destructive testing of concrete:1. Indentation test is used to assess the quality of concrete.2. Resonant Frequency method is based on a laboratory test.3. Compressive strength of concrete is estimated through Pulse Velocity Measurement4. Dynamic Modulus of Elasticity is determined by a Sonometer Test.5. Thickness of concrete can be estimated by in-situ Rebound Hammer Test.Which of the above statements are correct?
A.	1, 2 and 3 only
B.	1, 2 and 5 only
C.	1, 2, 3 and 4 only
D.	1, 2, 3, 4 and 5
Answer» D. 1, 2, 3, 4 and 5