Which of the following option is a valid MongoDB JSON :
A
{}
B
{
"user_id"=1,
"user_name"="Joe Sanders",
"occupation"=["engineer","writer"]
}
C
{
"user_id":1;
"user_name":"Joe Sanders";
"occupation":["engineer","writer"]
}
D
{
"user_id":1,
"user_name":"Joe Sanders",
"occupation":[
"occupation1":"engineer",
"occupation2":"writer"
]
}
