During the currency crisis of September $2020,$ the Bundesbank borrowed Euro $30$ billion when a Euro was worth $1\mathrm{.}2$ GBP$.$ It sold these Euros in the foreign exchange market for pounds. It repaid these Euros at the post$-$crisis rate of Euro $1\mathrm{.}3$:$1.$ What was the profit$/$loss earned by the Bundesbank?

$-3$ billion

$3$ billion

$-1\mathrm{.}92$ billion

$1\mathrm{.}92$ billion