(Solved): hello, can you pls help me solve this  What is the correct condensed structural formula for a ...

hello, can you pls help me solve this 

What is the correct condensed structural formula for a fatty acid with the following line-angle formula? \[ \begin{array}{l} \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{4}-\mathrm{CH}=\mathrm{C}=\mathrm{CH}-\left(\mathrm{CH}_{2}\right)_{11}-\mathrm{COOH} \\ \mathrm{CH}_{3}-\left\{\mathrm{CH}_{2}\right)_{4}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{CH}=\mathrm{CH}-\left\{\mathrm{CH}_{2}\right\}_{11}-\mathrm{COOH} \\ \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{4}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-\left(\mathrm{CH}_{2}\right)_{11}-\mathrm{COOH} \\ \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{20}-\mathrm{COOH} \end{array} \] Question 3 Which of the following is the correct condensed structural formula for a 10-carbon saturated fatty acid? \[ \begin{array}{l} \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{10}-\mathrm{COOH} \\ \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{3}-\mathrm{CH}=\mathrm{CH}-\left(\mathrm{CH}_{2}\right)_{3}-\mathrm{COOH} \\ \left(\mathrm{CH}_{3}\right)_{10}-\mathrm{COOH} \\ \left(\mathrm{CH}_{3}\right)_{9}-\mathrm{COOH} \\ \mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{9}-\mathrm{COOH} \end{array} \]