AIDS的免疫缺陷特征指标是 ( )

• A、CD4⁺↑，CD8⁺不变，CD4⁺/CD8⁺比值↑
• B、CD4⁺↑，CD8⁺↓，CD4⁺/CD8⁺比值↑
• C、CD4⁺↓，CD8⁺不变，CD4⁺/CD8⁺比值↓
• D、CD4⁺↓，CD8⁺↑，CD4⁺/CD8⁺比值↓
• E、CD4⁺不变，CD8⁺↑，CD4⁺/CD8⁺比值↓