Determine the sentiment expressed in the news from financial perspective.
Options: negative, positive

Dollar Tree Inc. DLTR, -1.82% announced a new board on Tuesday, adding Richard Dreiling as executive chair, Paul Hilal, founder and chief executive of Mantle Ridge LP, as vice chair, and five new directors. Five directors will continue on, including Dollar Tree's Chief Executive Michael Witynski, and six directors will retire.
positive