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: underline; letter-space:0.5em; vertical-align:top; text- align:left;}
B.
p{text-decoration: 0. 5em; letter-spaci: underline; 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;}