Observe the line given. g If the ratio of the length of \[AB\] to the length of \[BC\] is\[2:5\], find the length of\[AC\].

• A. \[21\,\,cm\]                   
• B.                    \[15\,\,cm\]                   
• C.                    \[30\,\,cm\]                   
• D.                    \[9\,\,cm\]