It was a platinum fob chain simple and chaste in design, properly proclaiming its vale by substance alone and not by meretricious ornamentation—as all good things should do.

A. showy and vulgar
B. fashionable and glitzy
C. low-quality and cheap
D. ridiculous and exaggerated

A. showy and vulgar

The given description describes the platinum fob chain as being simple and chaste in design, not relying on extravagant ornamentation to proclaim its value. This implies that the chain is modest and elegant rather than showy and vulgar (option A), fashionable and glitzy (option B), or ridiculous and exaggerated (option D). Therefore, the correct answer is C. low-quality and cheap.