Q: Fact 1: Smoking tobacco decreases stamina. Fact 2: Good cigars or quality cigars contain only tobacco. Given the two facts above, smoking what decreases stamina?

[1]. salmon;
[2]. toxins;
[3]. cigars;
[4]. cancer;
[5]. h2o;
[6]. dangerous;
[7]. fireplace;
[8]. steroids;
A:
[3].