Which financial asset should be selling at a greater price if the market is efficient?

$1)$ i$)$ A $10-$year Treasury bond with a $7\%$ coupon rate vs$.$ ii$)$ a $10-$year T$-$bond with a $7\mathrm{.}5\%$ coupon.

$2)$ i$)$ A $3-$month expiration call option with an exercise price of $$80$ vs$.$ ii$)$ a $3-$month call on the same stock with an exercise price of $$65.$

$3)$ i$)$ A put option on a stock selling at $$65$ vs$.$ ii$)$ a put option on another stock selling at $$80($all other relevant features of the stocks and options may be assumed to be identical$).$