Answer: Create a Cloud Storage lifecycle rule with Age: ג€30ג€, Storage Class: ג€Standardג€, and Action: ג€Set to Coldlineג€, and create a second GCS life-cycle rule with Age: ג€365ג€, Storage Class: ג€Coldlineג€, and Action: ג€Deleteג€.

The question requires configuring Cloud Storage lifecycle rules to store data for exactly one year while minimizing costs. Option A correctly implements this by: 1) Transitioning from Standard to Coldline storage after 30 days (Coldline is cheaper for infrequently accessed data), and 2) Deleting the data after 365 days when stored in Coldline class. This ensures data is stored for exactly one year at minimal cost. Option D is incorrect because it attempts to delete data from Nearline storage class at 365 days, but the data would be in Coldline after the first transition, making the deletion rule ineffective. Options B and C do not include deletion after one year, violating the storage duration requirement. The community discussion strongly supports A with 100% consensus and detailed reasoning about why D fails due to storage class mismatch.

Author: LeetQuiz Editorial Team