could someone help me answer these questions:

1. APR stands for:

Select one:

a.annual percentage rate

b.average percentage rate

c.actual percentage rate

d.automatic percentage rate

2. EAR stands for:

Select one:

a. estimated annual rate

b. effective annual rate

c. effective average rate

d. equivalent annual rate

3. NAR stands for:

Select one:

a. nominal average rate

b. normal annual rate

c. nominal annual rate

d. normal average rate

4. which of these is often referred to as the 'headline rate'?

Select one:

a. APR

b. NAR

c. EAR

d. AER