Which of the following combinations can be used to make a buffer? (Assume equal volumes are used.)A) 0.20 M NH, and 0.20 M HCIB) 0.20 M NH, and 0.10 M NH CIC) 0.20 M NH, and 0.10 M HFD) 0.10 M NH CI and 0.10 M NaF