What does the acronym SMART stand for?

A.
seek, measure, amenable, righteous, and timely

B.
specific, measurable, attainable, rigorous and results-focused, and time-bound

C.
specific, maneuverable, attainable, reformed, and time-bound

D.
simplistic, measurable, attainable, rigid, and tenacious

B. specific, measurable, attainable, rigorous and results-focused, and time-bound