<prompt> In Monteggia fracture, which is true about ulnar fracture and head of radiusBoth ulnar fracture and head of radius is displaced posteriorlyBoth ulnar fracture and head of radius is displaced anteriorlyUlnar fractures is posteriorly and head of radius is displaced anteriorlyUlnar fracture is anteriorly and head of radius is displaced posteriorly  <response>: B i.e. Both ulnar fracture and head of radius is displaced anteriorly 