1. 8180. An aircraft with an empty weight of 1,800 pounds and an empty weight CG of +31.5 was altered as follows: 1. two 15-pound passenger seats located at +72 were removed; 2. structural modifications increasing the weight 14 pounds were made at +76; 3. a seat and safety belt weighing 20 pounds were installed at +73.5; and 4. radio equipment weighing 30 pounds was installed at +30. What is the new empty weight CG? A. +30.61. B. +31.61. C. +32.69.