下列样式定义字体间距为 0.5倍间距、水平左对齐、垂直顶端对齐、有下划线,正确的定义是:
A.
p{text-decoration:0.5em;letter-spacing:underline;vertical-align:top;text-align:left; }
B.
p{text-decoration:underline;letter-spacing:0.5em;vertical-align:top;text-align:left; }
C.
p{text-decoration:left;letter-spacing:top;vertical-align:0.5em;text-align:underline; }
D.
p{text-decoration:underline;letter-spacing:0.5em;vertical-align:left;text-align:top; }