From a87c80c00bc4de475684a48cf0048c7ac80fad19 Mon Sep 17 00:00:00 2001
From: Zengtudor <zengtudor@outlook.com>
Date: Wed, 18 Sep 2024 14:45:36 +0800
Subject: [PATCH] update

---
 20240918/csp2019pre/explain.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/20240918/csp2019pre/explain.md b/20240918/csp2019pre/explain.md
index 2dce873..0e9a4fc 100644
--- a/20240918/csp2019pre/explain.md
+++ b/20240918/csp2019pre/explain.md
@@ -10,7 +10,7 @@
 
 ### 2.C
 
-### 3.A
+### 3.D
 
 ```
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