Which Front-End Optimization (FEO) action can a Citrix Administrator use to achieve the results above?

Before:

<link rel=”stylesheet” type=”text/css” href=”sheet/abc.css”>

<link rel=”stylesheet” type=”text/css” href=”sheet/xyz.css”>

After:

<link rel=”stylesheet” type=”text/css” href=”sheet/abc.css+ xyz.css”>

Which Front-End Optimization (FEO) action can a Citrix Administrator use to achieve the results above?
A . Minify CSS
B . Combine CSS
C . Inline CSS
D . Convert linked CSS