Step 1: Recall the definition of load bearing capacity.
The load bearing capacity of a prop is the maximum load it can safely support before reaching its elastic limit or buckling.
Step 2: Identify the correct option.
Since the question refers to the maximum safe axial load,
\[
\boxed{\text{Load bearing capacity}}
\]
is the correct answer.
Therefore,
\[
\boxed{(A)}
\]
is the correct answer.