1. Which security should sell at a greater price?

1. A 10-year Treasury bond with a 6% coupon rate versus a 10-year Treasury bond with a 7.5% coupon rate.
2. A 3-month expiration call option with an exercise price of 85 versus a 3-month call on the same stock with an exercise price of 80.
3. A put option on a stock selling at 70, or a put option on another stock selling at 75 (all other relevant features of the stocks and options may be assumed to be identical).