Given the task definition and input, reply with output. In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.

Statement: Strychnine is, in a certain sense, a cumulative poison, but it would be quite impossible for it to result in sudden death in this way. Choices: 1. It takes decades for strychnine to take its toll on a person's health. 2. Strychnine is a poison which needs a lot of time to affect somebody's health noticeabily. 3. Strychnine can under no circumstances cause death.
3