Assertion (A) ; The structrue of the interior of the earth is deduced with the help of seismic waves.Reason (R); The 'S' waves travel in solid, liquid and gas while the 'P' waves travel in solid, liquid and gas while the 'P' waves travel only in solidcode

• A. Both (A) and (R) are and (R) is the correct explanation of (A)
• B. Both (A) and (R) are true but (R) is the correct explanation of (A)
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true