1. Examine the subscription form shown in Figure 1. Using the structure of this form, do the following: Subscription Form 1 year (6 issues) for just $1820% off the newsstand price. (Outside the U.S. S21/year-U.S. funds, please) 2 years ( 12 issues) for just $34-save 24% (Outside the U.S. S40/2 years-U.S. funds, please) Name Address. City State Zip My payment is enclosed. Please bill me. Please start my subscription with current issue next issue. Figure 1 - Subscription Form a. Create a model with one entity. Specify the identifier and attributes. b. Create a model with two entities, one for customer and a second for subscription. Specify identifiers, attributes, relationship name, type, and cardinalities. The E-R Crow's Foot model above is based on the following data: c. Under what conditions do you prefer the model in A to that in B? d. Under what conditions do you prefer the model in B to that in A