For each of the following action$-$selection methods, indicate which option from the following describes it best.

$1.$ Purely exploration

$2.$ Purely exploitation

$3.$ Mix of both

Enter $"1"$ if you think the option is "Mostly exploration".

Method A

With probability $,$ select $$ a$(,).$ With probability $1,$ select a random action. $=0\mathrm{.}99$

Method B

Always select a random action.

Method C

Keep track of a count, Ns$,$ a for each state$-$action tuple, $($s$,$a$),$ of the number of times that tuple has been seen and select argmaxa $[$Q$($s$,$ a$)-$ Ns$,$ a$]$

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