In which one among the following is the speed of sound maximum?

1. The speed of sound depends on the medium through which it travels and its properties (like density, elasticity, temperature). 2. Sound generally travels faster in denser media, provided elasticity is high. 3. Speed of sound is faster in liquids than in gases, and faster in solids than in liquids. 4. In air, speed increases with temperature. So, sound is faster in air at 100°C than air at 0°C. 5. Speed of sound in water (liquid) is significantly higher than in air. 6. Speed of sound in Wood (solid) is significantly higher than in water or air. 7. Therefore, among the given options, the speed of sound is maximum in Wood.