NO.PZ202303270300005701
问题如下：
(1) The portfolio alternative with the least exposure to convexity is the:
选项：
A.bullet portfolio.
barbell portfolio.
equally weighted portfolio.
解释：
A is correct. The bullet portfolio has the same convexity as the 45.5-year bond, or 22.1. The barbell portfolio in B has portfolio convexity of 45.05 = (4.9 + 85.2)/2, while the equally weighted portfolio has portfolio convexity of 37.4 = (4.9 + 22.1 + 85.2)/3
答案中是按照计算解题的，请问可不可以按照结论，bullet dispersion/convexity小来直接选择？
