An invoice tracking application stores invoice images within an Amazon S3 bucket. After invoice images are uploaded, they are accessed often by applications users for 30 days. After 30 days, the invoice images are rarely accessed. The application guarantees uploaded images will never be deleted and will be immediately available upon request by users. The application has 1 million users and 20,000 read requests each second during peak usage.
Which combination of storage solutions MOST cost-effectively meet these requirements? (Choose two.)

A. Store the invoice images by using the S3 Standard storage class. Apply a lifecycle policy to transition the images to the S3 Standard-Infrequent Access (S3 Standard-IA) storage class 30 days after upload.
B. Create one S3 key prefix for each user in the S3 bucket and store the invoice images under the user- specific prefix.
C. Store the invoice images by using the S3 Standard storage class. Apply a lifecycle policy to transition the images to the S3 Glacier Instant Retrieval storage class 30 days after upload.
D. Store the invoice images by using the S3 Standard storage class. Apply a lifecycle policy to transition the images to the S3 One Zone-Infrequent Access (S3 One Zone-IA) storage class 30 days after upload.
E. Create one S3 key prefix for each day in the S3 bucket and store the invoice images under the upload date- specific prefix.