IAS 16 – Property revaluation question

I had a doubt in the following question:

“Hare Co revalued its property on 1 April 20X1 to $20m ($8m of which related to land). The property originally cost $10m ($2m of which is related to land) 10 years ago. The original useful life of 40 years for the buildings is unchanged. Hare Co’s policy is to make a transfer to retained earnings in respect of excess depreciation.”

In this Question we need pass journal entries for the same. Now, what I know is that there are two methods that I can proceed with proportionate readjustment or elimination method. I used the latter because I find it slightly easier. Journal entries created by me are as follows:

Dr. Land A/c 6,000,000
Cr. Revaluation Surplus A/c 6,000,000

Dr. Accumulated Dep A/c 2,000,000
Cr. PPE A/c 2,000,000

Dr. Building A/c 4,000,000
Cr. Revaluation Surplus A/c 4,000,000

Dr. Depreciation A/c 400,000
Cr. Accumulated Dep A/c 400,000

Dr. Revaluation Surplus A/c 200,000
Cr. Retained Earnings A/c 200,000

The journal created in the solution for revaluation on the property is:

Dr. PPE A/c 10,000,000
Dr. Accumulated Dep A/c 2,000,000
Cr. Revaluation Surplus A/c 12,000,000

Could someone help me out here, I just wanted a second opinion on, if the way I have accounted for is correct? (As the revaluation surplus that I will record under OCI will be 10,000,000 but what they have recorded is 12,000,000)