根据以下图片进行回答,其中绿色字体为交换机和PC配置内容。 Answer according to the following picture, where the green font is the switch and PC configuration content. (1)根据现在的配置情况,现在PC1可以网络连通(即ping通检测成功)的PC是哪些?请选择“(A)PC2 (B)PC3 (C)PC4 (D)都不可以”,填空字母。According to the current configuration, what are the PCS that PC1 can connect to the network (that is, ping successfully detected)? Please select "(A)PC2 (B)PC3 (C)PC4 (D)none" and fill in the blanks. 【 】 (2)根据现在的配置情况,现在PC2可以网络连通(即ping通检测成功)的PC是哪些?请选择“(A)PC1 (B)PC3 (C)PC4 (D)都不可以”,填空字母。According to the current configuration, what are the PCS that PC2 can connect to the network (that is, ping successfully detected)? Please select "(A)PC1 (B)PC3 (C)PC4(D)none" and fill in the blanks. 【 】