What is the radius of a circle inscribed in a rhombus with diagonals of length 10 and 24?
<spanclass=′latex−bold′>(A)</span>4<spanclass=′latex−bold′>(B)</span>58/13<spanclass=′latex−bold′>(C)</span>60/13<spanclass=′latex−bold′>(D)</span>5<spanclass=′latex−bold′>(E)</span>6