问题:
A、CREATE TABLE student(sno char(5) NOT NULL sname char(8) NOT NULL sex char(1) age int);
B、CREATE TABLE student (sno char(5) NOT NULL UNIQUE sname char(8) sex char(1) age int);
C、CREATE TABLE (sno char(5) NOT NULL UNIQUE sname char(8) NOT NULL sex char(1) age int);
D、CREATE TABLE student (sno char(5) NOT NULL UNIQUE sname char(8) NOT NULL sex char(1) age int);
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