First an object is slowly lifted from the bottom (point – A) of a thin tunnel of depth h1=R2  to earth’s surface (point - B) and then it is slowly lifted still higher to attain an altitude  h2=R2  above the earth’s surface (Point C).  W1 and W2  are the work performed by external agent in two cases respectively. Consider earth to be a uniform solid sphere and choose the CORRECT option(s)