How do ideological parties and single-issue parties differ from one another?

Question

A. Ideological parties tend to be more liberal, while single-issue parties tend to be more conservative.
B. Ideological parties focus on certain beliefs, while single-issue parties focus on one main concern.
C. Single-issue parties tend to be more liberal, while ideological parties tend to be more conservative.
D. Single-issue parties focus on certain beliefs, while ideological parties focus on one main concern