The following command creates a collection called $\_\_\_\_\_\_$ and inserts a document with the name $\_\_\_\_\_$ and value $\_\_\_\_\_\_$ in that collection.

$>$ db$.$intro.insert$(\{$ message : "Hello world of MongoDB" $\})$

WriteResult$(\{$ "nInserted" : $1\})$

a$.$ message, intro, Hello world of MongoDB

b$.$ Hello world of MongoDB, intro, message

c$.$ intro, message, Hello world of MongoDB

d$.$ intro, message, nInserted