Question 1 1 pts If all the inputs to the ALU shown below are valid at time O, what is the earliest time we can read the outputs and know they are valid no matter what the input values are, assuming that the propagation delays for each gate type are as follows: ANDs: 1.9 ns, ORs: 3.8 ns, XORs: 5 ns, and NOTs: 1.4 ns