Please explain it in detail. Thank you.

P 11-1 Consolidated balance sheets (parent-company and entity theories) The adjusted trial balances of Pop Corporation and its 80 percent-owned subsidiary, Son Corporation, at December 31, 2017, are as follows (in thousands): Pop Son Cash $ 64 $ 40 Receivables---net 240 360 Inventories 600 300 Plant assets--net 2,400 1,500 Investment in Son 1,504 Cost of sales 2,600 1,200 Depreciation 450 150 Other expenses 542 350 Dividends 400 100 $8,800 $4.000 Accounts payable $ 408 $ 200 Other liabilities 600 400 Capital stock 2,000 1.000 Retained earnings 1,600 400 Sales 4.000 2,000 Income from Son 192 $8.800 $4.000 Pop acquired its interest in Son for $1,280,000 on January 1, 2016, when Son's stockholders' equity consisted of $1,000,000 capital stock and $200,000 retained earnings. The excess cost was due to a $200,000 undervaluation of plant assets with a 5-year remaining useful life and to previously unrecorded patents with a 10-year amortization period. Pop uses a one-line consolidation in account- ing for its investment in Son. REQUIRED: Prepare comparative consolidated balance sheets at December 31, 2017, for Pop Corporation and Subsidiary under (a) parent-company theory and (b) entity theory