The inequality '81 2d 90 D' needs further clarification on the operators intended by '2d' and '90 D'. Assuming '2d' means 'divided by 2' and '90 D' signifies a value of 90, then '81 divided by 2' results in 40.5, making it less than 90. Therefore with these assumptions, if the d is a variable, the statement would be false, but depends entirely on what 'd' represents.