Which of the following best states the chance of success for his scheme?
Any chance of success depends upon the 100 acres being considered by the courts as a part of a common development scheme which also includes the 200 acres of Royal Oaks
He can restrict use only to the extent of that imposed by zoning (that is, to residential use by not more than four dwelling units per lot). 
He cannot restrict the 100 acres to residential use because of the conflicting use for retail commercial purposes in the 200 acres composing the shopping center.
He cannot impose any enforceable restriction to residential use only.