How to write a selector for immediate children in a nested sass hierarchy?

Question

Sass

Actually, as from

.container {
      .div{ font-size: 16px; }
}

Get in css:
.container > .div {font-size: 16px;}

Answer 1

.container {
   > .div{
      font-size: 16px;
   }
}
//или
.container {
   & > .div{
      font-size: 16px;
   }
}

Answer 2

.container {
  > .div {
   font-size: 16px;
   }
}

Not?