Which one of the following adoption is valid under Hindu Adoption and Maintenance Act, 1956?

'Amit', a Hindu male adopted 'Sunny', aged 10 years in 1986. 'Sunil', a son was born to his wife in 1987. 'Amit' cancelled the adoption of 'Sunny' in 1988 and informed him that he is no more to be known to be his son.

Albert, a citizen of U.S.A. adopts, an abandoned child who is being brought up in an orphanage in India.

Kamini, a Hindu widow aged 23 years adopts her brother's daughter aged 2 1/2 years.

Kamla, was living separately from her husband from last 6 years, and she adopted a girl aged 3 years.