Provide explanations please: $1$A$.[6$ pnts$]$ To place the beam in static equilibrium, what must the reactions be at the fixed support? $($i$.$e$.$ when the fixed support is removed and a free body diagram of the beam is drawn, what must $\backslash ($ R$\_\{$x$\},$ R$\_\{$y$\}\backslash ),$ and $\backslash ($ M $\backslash )$ be at point $\backslash ($ A $\backslash ))?$ Assume $\backslash ($ x $\backslash )$ is positive to the right and $\backslash ($ y $\backslash )$ is positive pointing up at A $.$

$1.\backslash (\backslash$mathrm$\{$R$\}\_\{\backslash$mathrm$\{$Ax$\}\}=\backslash )$

$2.\backslash (\backslash$mathrm$\{$R$\}\_\{\backslash$mathrm$\{$Ay$\}\}=\backslash )$

$3.\backslash (\backslash$mathrm$\{$M$\}\_\{\backslash$mathrm$\{$Az$\}\}=\backslash )$

Show your work using the equilibrium equations:

$1$B$.[2$ pnts$]$ Which of the following pairs of forces will produce a couple with magnitude equal to $5$ Nm $?$

a$.$ A only

b$.$ B only

c$.$ C only

d$.$ A and B only

e$.$ B and C only

f$.$ None of the above