A Ladder of Length $l$ And Mass $= m$ Leans Against a Frictionless Wall

Multiple Choice

A ladder of length $l$ and mass $= m$ leans against a frictionless wall. The base of the ladder makes an angle $\theta$ with the rough floor, $\mu _ { s }$ . Providing that the ladder is in static equilibrium, the relation between $\theta$ and $\mu _ { s }$ is

A) $2 \mu \tan \theta = 1$
B) $2 \mu = m g \cos \theta$
C) $\mu = 2 \theta$
D) $\tan \theta = \mu$