7. Suppose a sample comprises 84 annual returns so that 5% of the number of observations is 4.2. We must interpolate between the fourth and fifth observation from the bottom. Suppose the bottom five returns are 25.03%,25.69%,33.49%,41.03%, 45.64%. Which interval should the VaR locate at? How to calculate the VaR? And if we assume equal probabilities for all values, then how can we find the Expected Shortfall in this scenario