Choose the correct option : 
 
Assertion (A): A score of \(\frac{45}{50}\) is equal to a score of \(\frac{153}{170}\) when expressed as percentages.

Reason (R): \(\frac{45}{50} \times 100\% = 90\%\) and \(\frac{153}{170} \times 100\% = 90\%\)