In a row of girls, Rita and Monika occupy the ninth places from the right end and tenth place from the left end, respectively. If they interchange their places, Rita and Monika occupy seventeenth places from the right and eighteenth place from the left, respectively. How many girls are there in the row ?
Choose the correct alternative from the following : - Assertion (A) : Pressure cookers are fitted with ebonite handles. Reason (R) : Ebonite is strong.