Convolve the signals e-2t u(t), e-3t u(t). Determine the output?

• A. y(t) = (e-2t – e-3t)u(t)
• B. y(t) = (e-2t – e-3t)
• C. y(t) = (e-3t – e-2t)u(t)
• D. y(t) = (e-t – e-3t)u(t)