A、<p><span style=" font-size: 19px; font-family: 宋体;">5</span><span style=" font-size: 19px; font-family: 宋体;">％</span></p>
B、<p><span style=" font-size: 19px; font-family: 宋体;">15</span><span style=" font-size: 19px; font-family: 宋体;">％</span></p>
C、<p><span style=" font-size: 19px; font-family: 宋体;">20</span><span style=" font-size: 19px; font-family: 宋体;">％</span></p>
D、<p><span style=" font-size: 19px; font-family: 宋体;">30</span><span style=" font-size: 19px; font-family: 宋体;">％</span></p>