Quasicomponents of Integer Reciprocal Space with Zero are Single Points

Theorem
Let $A \subseteq \R$ be the set of all points on $\R$ defined as:
 * $A := \left\{{0}\right\} \cup \left\{{\dfrac 1 n : n \in \Z_{>0}}\right\}$

Let $\left({A, \tau_d}\right)$ be the integer reciprocal space with zero under the usual (Euclidean) topology.

Then the quasicomponents of $A$ are singletons.

Proof
From Integer Reciprocal Space with Zero is Totally Separated, $A$ is totally separated.

The result follows from Totally Separated iff Quasicomponents are Singletons.