Calculate the number of dependency exemptions that could be claimed and the standard deduction that the taxpayer is entitled to take in 2023 in each of the following independent cases:
a) Case 1: 2 exemptions, $12,550 deduction
b) Case 2: 3 exemptions, $25,100 deduction
c) Case 3: 1 exemption, $6,275 deduction
d) Case 4: 4 exemptions, $25,100 deduction
