Which of the following securities should sell at a higher price and WHY?

$($a$)$ A $10-$year Treasury note with a $1\%$ coupon versus a $10-$year Treasury note with a $9\%$

coupon.

$($b$)$ A $3-$month call option on a stock selling at $$50$ or the same call option if the stock were

instead selling at $$60.$

$($c$)$ A $6-$month expiration put option with an exercise price of $$70$ versus a $6-$month put option

on the same stock with an exercise price of $$90$