Question: A child solved a problem : 1/2 + 1/3 = 2/5 . What is the most appropriate inference drawn from the solution ?

  Option 1: Child does not know how to represent fractions on number line
  Option 2: Child has extended the concept of addition of natural numbers to addition of fractions
  Option 3: Child does not know addition of numbers
  Option 4: Child does not know how to take L.C.M.
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