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阅读理解Descriptions:MometrixTest Preparation is the World'sNo. 1 Test Preparation Company. Here, we offer over 3,500 productscovering more than 1,500 standardized exams ,and we are constantly working toimprove and expand our line﹣up(阵容).Every year ,millions of test﹣takerstrust us to provide them with the best resources available, ranging from videosand other free online materials, coupled with great efforts, enable test﹣takers to attain thehighest scores. We help people achieve their dreams by offering the toolspeople need in order to overcome the testing hurdles that stand betw下列关于2311Na的叙述，错误的是（　　）A．质子数是11B．电子数为11C．中子数是11D．质量数是23