please solve it step by step

Mammoth Publishing, Inc. owns a weekly magazine called "Nova Health," and sells annual subscriptions for $96. Customers prepay their subscription fee and receive 52 issues starting in the following month. The company also offers new subscribers a 25% discount coupon on its other weekly magazine called "Fishing & Camping," which has a list price of $84 for an annual subscription. Mammoth estimates that approximately 10% of the discount coupons will be redeemed. Required: (a) How many performance obligations are in a single subscription contract? (b) Prepare the journal entry to account for one new subscription of "Nova Health,"clearly identifying the revenue or deferred revenue associated with each performance obligation