SolarCity Corp. SCTY, +6.94% Chief Executive Lyndon Rive said he was "happy" about the merger between Vivint Solar Inc. VSLR, +44.76% and SunEdison Inc. as he expects a Vivint under SunEdison will step up its solar advocacy efforts.
In the context of the input sentence, determine the relationship between 'SolarCity' and 'Lyndon Rive'.
Options: publisher, chief executive officer, member of, business division