Question: How can you devise an algorithm that determines for any possible java program input whether the program raises a Null Pointer Exception ? Select one

How can you devise an algorithm that determines for any possible java program input whether the program raises a Null Pointer Exception ?
Select one
a. Such an algorithm can not exist due the halting theorem
b. Such an algorithm can not exist due the exception handling theorem
c. Run topological sorting on the input
d. Build a sophisticated parser for the grammar of java

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