Read the given statements carefully and select the correct ones:
$(1)$ Individuals of the same species together form a population.
$(2)$ Mortality is an important factor for population growth.
$(3)$ Natality (birth rate) is an important factor for the immediate increase in population size.
$(4)$ In commensalism,both organisms benefit from the interaction.

• A
  Only $1$ and $3$
• B
  $1, 2$ and $3$
• C
  Only $1$
• D
  $1, 2, 3, 4$