For the positive integer ABCD, define^_ ^ABCD is ad minus BC, if 1 is less than^_ ^If 1bd4 is less than 3, then What is B plus D?

For the positive integer ABCD, define^_ ^ABCD is ad minus BC, if 1 is less than^_ ^If 1bd4 is less than 3, then What is B plus D?

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