RMod as closed symmetric monoidal category for a commutative ring

Let \(R\) be a commutative ring and \(\mathrm{RMod}\) the category RMod Then \(\mathrm{RMod}\) admits a closed symmetric monoidal structure via

1. the tensor product for a commutative Ring as tensor functor of a monoidal category
2. the ring \(R\) as tensor unit
3. TODO