你已经绘制了一个命名为Queen的ggplot对象，现在想将其改为无背景、无网格线的样式，且图的标题字体加粗、大小为12磅，新绘制的对象保存为King。所需要的命令为（）
A: King<-theme_classic()+theme(plot.title=element_text(face="bold",size=12))
B: King<-Queen+theme_classic()+theme(plot.title=element_text(face="bold",size=12))
C: King<-Queen+theme_bw()+theme(plot.title=element_text(face="bold",size=12))
D: King<-Queen+theme_bw()+theme(axis.ticks=element_line(color="grey",size=1.2))
A: King<-theme_classic()+theme(plot.title=element_text(face="bold",size=12))
B: King<-Queen+theme_classic()+theme(plot.title=element_text(face="bold",size=12))
C: King<-Queen+theme_bw()+theme(plot.title=element_text(face="bold",size=12))
D: King<-Queen+theme_bw()+theme(axis.ticks=element_line(color="grey",size=1.2))
举一反三
- The theme of ______ to the king, the lor...n medieval romances.
- The theme of ____ to king and lord was repeatedly emphasized in romances.
- Theme is the last element in a clause.
- The theme of ______ to the king, the lord and love is repeatedly emphasized in medieval romances.
- A king size bed is wider than a queen size bed.