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answer is 3 only
But I think it should be 3 and 4
 
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Preethi refer this thread at the end Dan has given a very good explanation of Casting.
Hope this helps you.
reshma
 
preeti khane
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my mistake
I kept thinking C extends B
But C only extends A then there is no problem
 
So it takes a day for light to pass through this glass? So this was yesterday's tiny ad?
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
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