In discussing a client's various loss exposures, Yvonnean insurance agentis told that this client has fractional ownership of an aircraft. In plain English, this means that the client$($Search Chapter $7)$ a$.$ has a time$-$share interest in the airplane. b$.$ is one of two or more parties that own the airplane. c$.$ operates the airplane during part of the year indicated by his fraction and that it is laid up during the remainder of the year. d$.$ owns the front half, the back half, or some other designated portion of the airplane.