Writing about the Teapots

1. Teapot a is the oldest. It's older than teapots b and c.
2. Teapot c is smaller than teapot b.
3. Teapot a is the most expensive.
4. Teapot b is cheaper than teapot a.
5. Teapot b is bigger than teapot c.
6. Teapot c is the most modern.