In which one of the following judgments of the Constitutional Bench of the Supreme Court of India, the 'rarest of rare' principle in the award of death penalty was first laid down ?

- In the Bachan Singh case, a Constitution Bench of the Supreme Court upheld the constitutional validity of the death penalty but ruled that it should only be imposed in the 'rarest of rare' cases. - The judgment provided guidelines for courts to follow while deciding whether to impose the death penalty, emphasizing that life imprisonment is the rule and the death sentence is an exception. - The 'rarest of rare' doctrine requires courts to consider aggravating and mitigating circumstances and conclude that the alternative sentence of life imprisonment is unquestionably foreclosed.