Calculate the marginal frequencies for the following contingency table and find the expected frequency for each cell, assuming independence.

Row totals: $45$, $25$

Column totals: $40$, $30$

Expected frequencies: ($13$, $12$, $22$, $23$)

Row totals: $45$, $25$

Column totals: $30$, $40$

Expected frequencies: ($12$, $13$, $27$, $18$)

Row totals: $25$, $45$

Column totals: $30$, $40$

Expected frequencies: ($16$, $8$, $26$, $20$)

Row totals: $25$, $45$

Column totals: $40$, $30$

Expected frequencies: ($14$, $11$, $26$, $19$)