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Directions : In Question Numbers 19 and 20, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option from following : (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A). (B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of (A). (C) Assertion (A) is true, but Reason (R) is false. (D) Assertion (A) is false, but Reason (R) is true.
Assertion (A) : For an A.P., 3, 6, 9, ..., 198, $10^{th}$ term from the end is 168.
Reason (R) : If 'a' and 'l' are the first term and last term of an A.P. with common difference 'd', then $n^{th}$ term from the end of the given A.P. is $l - (n - 1)d$.
Assertion (A) : For an A.P., 3, 6, 9, ..., 198, $10^{th}$ term from the end is 168.
Reason (R) : If 'a' and 'l' are the first term and last term of an A.P. with common difference 'd', then $n^{th}$ term from the end of the given A.P. is $l - (n - 1)d$.
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(D) Assertion (A) is false, but Reason (R) is true.