Table:
text: Ohio River Valley Conference
Membership
Membership
School Location_ Mascot Size_ IHSAA_Class County Year_Joined Previous_Conference
Jac-Cen-Del Osgood Eagles 296 A 69 Ripley 1960 none (new school)
Milan Milan Indians 417 AA 69 Ripley 1952 Independents
Rising Sun Rising Sun Shiners 312 A 58 Ohio 1952 Southeastern Indiana
Shawe Memorial Madison Hilltoppers 93 A 39 Jefferson 1984 Independents
South Ripley Versailles Raiders 414 AA 69 Ripley 1966 none (new school)
Southwestern (Hanover) * Hanover Rebels 462 AA 39 Jefferson 1960 none (new school)
Switzerland County Vevay Pacers 410 AA 78 Switzerland 1968 none (new school)

Question: How many years are members of the Ohio River Valley Conference with a height less than 417, an IHSAA Class A, and a Jac Cen Del school?