|Question 19Verbal

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Text
In a chemical reaction, the value known as molar mass helps convert between the mass of the reactants and the mass of the product. The gaseous        have molar masses of 162.15 and , respectively.
Which choice completes the text so that it conforms to the conventions of Standard English?
compounds, quindoxin and isobutylene,
A
compounds quindoxin and isobutylene,
B
compounds, quindoxin and isobutylene
C
compounds quindoxin and isobutylene
D