Concept:
In knitting, stitches and machine components are matched based on loop formation systems, guide bars, and cam mechanisms.
Step 1: Match Open Pillar Stitch.
Open pillar stitch relates to runner ratio system:
\[
A \rightarrow V
\]
Step 2: Match Delaware Stitch.
Delaware stitch uses guide bar arrangement:
\[
B \rightarrow I
\]
Step 3: Match German Rib.
German rib relates to dial and cylinder needle system:
\[
C \rightarrow VI
\]
Step 4: Match Spreader.
Spreader is related to take-down mechanism:
\[
D \rightarrow II
\]
Step 5: Final answer.
\[
\boxed{A-V,\; B-I,\; C-VI,\; D-II}
\]
Thus,
\[
\boxed{\text{Option (C) is correct.}}
\]