Read the given passage
and answer the following questions.
Which of the following statements is/are correct?
I. Substance T and ethane belong to same homologous
series.
II. Substances P and Q undergo addition reactions.
III. Substances P and R both react with sodium
metal to liberate H2 gas.
IV. Substance P reacts with sodium bicarbonate to
give a brisk effervescence of CO2.
A III only
B II and IV only
C I and III only
D III and IV only