NO.PZ202305230100003801
问题如下：
Which level of coupon would the Swiss government choose if its goal is to minimize the premium over par value for a five-year debt issue?
选项：
A.1.0%
B.0.5%
C.0.0%
解释：
C is correct. Given that Switzerland’s current five-year spot (and par) rate is negative, any non-negative coupon will cause the Swiss government to issue debt at a premium to par. Issuance of debt without a coupon will minimize the size of the premium.
minimize the premium over par value for a five-year debt issue。
问题里的这句能帮忙解释下吗，没看懂。。
考察的哪个知识点呢，感觉很模糊。
