Membership Plugin - Subscription Levels for Different Prices

I wish to add 3 Membership Levels to each Subscription:
-Monthly Pricing
-Quarterly Pricing
-Yearly Pricing

I have 3 Access Levels - A, B and C

For example, Can I have a Subscription that is set up with Access Level A, with 3 different price options?

I tried creating a Subscription, and drag/dropped "A" 3 times, and changed the price on each Subscription Level for A.

When I try to test it live, the pop up window appears and there is only One Choice to pay for the first price. The additional prices are not available.

I hope this is not confusing. Thank you for your help.

Adam