please answer using Matlab

2) Fast Fourier transform. (10 points) For this question, you are going to work on EEGrest ingstate. mat file. You're expected to remove the electrical line noise at 50Hz and its harmonics. The algortihm is going to be as foolows: 1) Load the data (0.5 points) 2) Plot time series signal ( 0.5 points) 3) Plot frequency spectrum ( 2 points) 4) Define at which frequencies the electical noise is present. (1 points) 5) Self-study question!!! A band stop filter known also as a Notch Filter, blocks and rejects frequencies that lie between its two cut-off frequency points passes all those frequencies either side of this range. Build a notch filter to filter the electrical line noise. (5 points) 6) Plot the filtered signal ( 1 points). Do not write codes that are irrelevant, only write the codes which are necessary. I will directly copy/paste your codes to matlab platform. If it's not working your question is not going to be evaluated. So when you're writing and explanation, please write them as comments with % signs