Single/multi-select question: Does the sentence "In 1876 Lord Kelvin had already discussed the possible construction of such calculators, but he had been stymied by the limited output torque of the ball-and-disk integrators." provide a valid answer to the question "In 1876 who lobbied for the construction of the differential analyzers?"
pick from the following.
(a). yes;
(b). no;
(a).