Need Help with Multiple Condition Nested Logical Functions

I am having trouble evaluating two conditions with nested logical operators to produce the output I need.

For example Condition 1 has 5 choices (A,B,C,D,E) and Condition 2 has 3 choices (a,b,c).

Breaking it down,
[Condition 1] option "A" always applies and should give "Yes" (No matter [condition 2], "A" always gives "Yes")
[Condition 2] option "c" always applies and should give "Yes" (No matter [condition 1], "c" always gives "Yes")

[Condition 1] option "D" never applies and should give "No" (No matter [condition 2], "D" always gives "No")

[Condition 1] options "C" and "B" only apply if [condition 2] is "b" (if so, the answer is "Yes")


What I need is the equivalent of:

if ((([condition 1] == A) || ([Condition 2] == c)) || (([condition 1] == B || C) && ([condition 2] == b)), "Yes", "No")