What is the proper accounting treatment for the following stages of internal-use software costs?

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Preliminary stage costs

Post-implementation costs

a.

Capitalized as incurred

Capitalized as incurred

b.

Expensed as incurred

Capitalized as incurred

c.

Capitalized as incurred

Expensed as incurred

d.

Expensed as incurred

Expensed as incurred