Which of the following is an example of a JSON markup language?

Multiple Choice

Cust$\_$Nbr$,$Cust$\_$Name,Cust$\_$Bal

$1232,$ Mike Barnes, $$1,059\mathrm{.}65$

$1325,$ Lakshmi Singh, $$2914\mathrm{.}32$

$1972,$Seo$-$Jun Hak, $$932\mathrm{.}00$

$\{$

"Customer": $[$

$1$

"Cust$\_$Nbr$"$: $"1325",$