In the following question, a statement of Assertion (A) is followed by a statement of Reason (R). Pick the correct option.
 
Assertion (A): If Tanvi is \(x\) years of age now. \(5\) years ago her age was \(10\) years, then her present age is \(15\) years.

Reason (R): We can express the given situation in form of expression as, \(x – 10 = 15\).