$1\mathrm{.}2$ Three$-$ Perlod Moving Average Method

$\backslash$table$[[$Period$,\backslash$table$[[$Sales $($$$],[$Millions$)]],$Forecast,Error,$\backslash$table$[[$Absolute$],[$Error$]],\backslash$table$[[$Percentage$],[$Error$]],\backslash$table$[[$Squared$],[$Error$]]],[1,11,$N$/$A$,,,,],[2,9,$N$/$A$,,,,],[3,8,$N$/$A$,,,,],[4,11,9\mathrm{.}33,1\mathrm{.}67,1\mathrm{.}67,15\mathrm{.}18\%,2\mathrm{.}79],[5,10,9\mathrm{.}33,?,0\mathrm{.}67,6\mathrm{.}70\%,0\mathrm{.}449],[6,,9\mathrm{.}67,,,10\mathrm{.}94\%,1\mathrm{.}62],[,,,,$MAD,MAPE,MSE$]]$

What is the error for time period $5?$

$1\mathrm{.}67$

$9\mathrm{.}33$

$0\mathrm{.}67$

$10$