4. Given the table for serial and parallel execution times of a program with different number of processors, find and fill the blanks in the table and figure out the most efficient number of processors for the parallel approach. Keep in mind that the first column is for serial program not for parallel. Show your calculations. (10 points) Table 1 Speed ups and Efficiencies of a serial and parallel program of Processers 16 30 30 30 30 30 30 25 10