Carolina Widget Company bought a new widget making machine for $8,000 in 2003, then in 2013 it no longer operated. Its value, V, can be modeled by V = 8000 ( 0.60 ) t where t is the age in years that the machine operated. What is a practical domain for this function? A. all real numbers B. all real numbers greater than 0 C. all real numbers between 0 and 10 D. all real numbers between 0 and 8000