The Texas Department of Transportation (TxDOT) is considering two designs for crash barriers along a reconstructed portion of I-10. Design 28 will cost $3 milition to install and $142,000 per year to maintain. Design 4R will cost $3.7 million to install and $55,000 per year to maintain. Determine which design should be selected based on a rate of return analysis if TXDOT uses a MARR of 6% per year and a 20 -year project period. The rote of return is (\%) Design is selected