Problem: cubes with each side one inch long are glued together to form a larger cube . the larger cube ' s face is painted with red color and the entire assembly is taken apart . 23 small cubes are found with no paints on them . how many of unit cubes have at least one face that is painted red ? 
Options: ['a ) 64', 'b ) 72', 'c ) 86', 'd ) 98', 'e ) 102']
e