Check the boxes of the THREE TRUE statements in the following list: 1. In one-dimensional wave mechanics, the probability of finding a particle to be exactly at position x at time t is equal to Y(x,t)2 where Y(x,t) is the normalized wave function of the particle. 2. In a two-slit interference experiment carried out with electrons, it is possible to increase the number of electrons arriving at certain points on the detecting screen by closing one of the slits. 3. In any stationary state, the system has a definite energy. 4. If an isolated system has a wave function that is a linear combination of stationary states, with constant coeffcients, the probability of any of its possible energy values is independent of time. 5. In any system, energy always comes in discrete lumps, the magnitude of which can be calculated.