Answer: 121

According to Snowflake documentation and the community consensus (with D receiving 57% of votes and multiple users citing the official documentation), virtual warehouses are billed with a minimum of 60 seconds per startup. The first run of 61 seconds is billed for 61 seconds (60-second minimum plus 1 second). After shutdown and restart, the second run of 30 seconds incurs another 60-second minimum charge. Therefore, total billing is 61 + 60 = 121 seconds. Option C (120 seconds) is incorrect because it doesn't account for the per-second billing after the first minute - the first run exceeded 60 seconds, so it's billed for exactly 61 seconds, not rounded up to 120 seconds total.

Author: LeetQuiz Editorial Team