The final finite element equations for time-dependent heat conduction are ordinary differential equations in time. This is a consequence of the following property of the finite-dimensional trial solution: it is linear in time it is separable in the sense that the nodal degrees of freedom are only functions of time, whereas the spatial dependence is carried in the basis functions there is an initial condition in the problem specification the finite element solution converges with reduction of the time step Incorrect option 1 Incorrect option 2 Incorrect option 3