以下关于菜单项鼠标点击事件处理方法（窗机一个窗体对象并显示它）的代码，哪个是正确的？
选项：

A:private void ToolStripMenuItem_Click(object sender, EventArgs e){ obj.MdiParent = this; OtherForm obj = new OtherForm(); obj.Show(); tssMsg.Text = obj.Text;};
B:private void ToolStripMenuItem_Click(object sender, EventArgs e){ obj.Show(); obj.MdiParent = this; OtherForm obj = new OtherForm(); tssMsg.Text = obj.Text;};
C:private void ToolStripMenuItem_Click(object sender, EventArgs e){ OtherForm obj = new OtherForm(); obj.MdiParent = this; obj.Show(); tssMsg.Text = obj.Text;};
D:private void ToolStripMenuItem_Click(object sender, EventArgs e){ tssMsg.Text = obj.Text; OtherForm obj = new OtherForm(); obj.Show(); obj.MdiParent = this;}