An operational amplifier is powered by a $\backslash (\backslash$pm $15\backslash )$ volt supply, and a moderate potential difference placed across its input terminals $\backslash ($ V$\_\{+\}\backslash )$and $\backslash ($ V $\backslash ).$ What voltage will appear at the output of the op amp?

Select one:a$.$ either $13\mathrm{.}6$ volts or $-13\mathrm{.}6$ voltsb. either $15$ volts or $-15$ voltsc. $\backslash (\backslash$mathrm$\{$A$\}\backslash$times$(\backslash$mathrm$\{$V$\}+-\backslash$mathrm$\{$V$\}-\backslash$mathrm$\{)\}\backslash )$ voltsd. it entirely depends on the precise internal structure of the op amp