Consider the input with the inputs 4 u(t) and the impulse response 5 +7 , the time constants of the output are,

• A. 0.2, 0.33 and 0.5
• B. 4.5 and 7
• C. 0.2, 0.4 and 0.7
• D. 0.2, 0.1 and 0.25