Which of the Following Matched Pairs of Elemental Names and Chemical

Which of the following matched pairs of elemental names and chemical symbols is properly labeled?
I. Calcium, C
II. Plutonium, Pt
III. Silicon, Si
IV. Iron, I
V. Nitrogen, N

A) I, IV and V
B) II, III and V
C) I, III, IV and V
D) III and V
E) All are properly labeled