u/Warm-Pudding6138

https://preview.redd.it/bke8mpghmfbh1.png?width=1752&format=png&auto=webp&s=d47bba04de3a86f9bbb9239c97b861382912f8b7

https://preview.redd.it/sh970avimfbh1.png?width=1700&format=png&auto=webp&s=7c80038d7315538de96f0cc6c30733dabe19121d

hi all, does anyone know why the answer is not B? I thought for immunization we should minimize portfolio convexity as well, Asset port Macaulay duration should be close to liability but exact match is not necessary. Thanks!