Which of the following must sign the S$-$Election form? $($select all who apply$)$

a$.$

Richard has promised to buy shares but hasn't yet

b$.$

Fred owns $100$ shares and lives in California

c$.$

Mary owns no shares but is married to John

d$.$

Bettye owns no shares but is married to Wilma

e$.$

Barney owns no shares but is married to Fred

f$.$

John owns $100$ shares and lives in Louisiana

g$.$

Wilma owns $100$ shares and lives in Kansas

h$.$

George owned shares but has already sold them back to the company