Psychic Expert Needs Logical Thinking

Clues that psychic expert can use!

Let's believe our psychic powers & remember only 1 inscription can be TRUE & other 3 must be FALSE.

1. If the spirit is really behind the Door A , then both the inscriptions - on Door B & Door D are TRUE.

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2. If the spirit is behind the Door B then again 2 inscriptions - one on Door A & Door D are TRUE.

3. If we assume the spirit is behind the Door C then both the inscriptions that are on Door C & Door D are  TRUE.

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4. So we are only left with the Door D & that's where wanted spirit lies. In this case only inscription on Door B is TRUE & rest of all are FALSE.

And let's not forget to congratulate an expert within us for this wonderful achievement!