Fixed income question

edgeon

i was doing practice problems for reading 66 on CFA textbooks,

the question 20 says:

at yield levels that are close to the bond's coupon rate, the price of an option-free bond higher than the price of an otherwise identical callable bond, but not higher than an otherwise identical putable bond.

I understand the negative convexity thing, but i don't get what does 'at yield levels that are close to the bond's coupon rate' mean?
why is that identical to relatively low yield levels?