Task: Question Answering
Input (English): Problem: a boy perform 5 times a reaction and his reading are 2, 2.1, 2, 2.2 but unfortunately 5 th reading clearly not visible because a drop of chemical fall onto it. but luckily he have mean of all reading which is 2. please help him in finding 5 th reading.
Options: a. 2, b. 1.7, c. 1.9, d. 1.8, e. 2.1
Output (English): b