Use the "Time series learning activity" excel document under topic $4$ in moodle to answer the following question:

What is the MAE for the forecast in sheet $2$ using the $3$MA$?$

$**$Enter the number only$**$

$**$Do not use any words or symbols$**$

Select one:

a$.$

$7\mathrm{.}33$

b$.$

$11\mathrm{.}54$

c$.$

$8\mathrm{.}67$

d$.$

$5\mathrm{.}11$