我正在尝试在表中添加子表。为了实现这一点，我添加了以下包：
\usepackage[format=plain,labelfont=bf,up,textfont=it,up]{caption}
\usepackage{subcaption}
添加这些之后，编译结果为
(/usr/share/texmf-texlive/tex/latex/psfrag/psfrag.sty)
(/usr/share/texmf-texlive/tex/latex/tools/theorem.sty
(/usr/share/texmf-texlive/tex/latex/tools/thp.sty)))
! LaTeX Error: Option clash for package caption.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.13 \usepackage
{subcaption}
?
之前添加的软件包有：
\usepackage[utf8]{inputenc} %Allows input of tex files encoded in UTF8
\usepackage[T1]{fontenc} %Set font encoding for output PDF
\usepackage[danish,english]{babel} %Allows langauge switching (English is default)
\usepackage{graphicx} %Support for including graphics
\usepackage{xcolor} %Support for using colours
\usepackage[hang,normalsize,bf]{caption} %Make pretty captions
\usepackage{hyperref} %References package
\usepackage{varioref} %Enhances references (\vref {label})
\usepackage{fancyhdr} %Pretty headers/footers
\usepackage{amsmath,amssymb,latexsym} %AMS and other symbols
\usepackage{epic,eepic,epsfig,graphics,psfrag} %Figure/picture packages
\usepackage{theorem}