Vascular bundles in a dicot leaf are

A timber merchant told his customer that log of wood which he was purchasing comes from a 20 years old tree, he told so by inspecting the-

Select true statements:

(a) Lenticels are absent in woody climbers and leaves

(b) Lenticels occur in most woody trees

(c) The spring wood is lighter in colour and has a lower
density

(d) The sap wood also called as duramen