Consider the following argument

Today is one of the last hot days of summer. We should go and lay out on the beach today. We always enjoy laying out on the beach on hot summer days, unless one of us has sunburn. And I bet our friends Jan and Dave will be going to the beach today, too.

In a diagram of this argument, where would the following additional information belong:

Neither of us has sunburn

It is an objection to statement $2$

It provides direct support for statement $3$

It is a new independent premise that directly supports the conclusion

It is a tacit premise that should be added to join statements $1$ and $3$

It is a tacit premise that should be added to join statement $4$