How should money be divided in a committed relationship in which both partners have income?

The couple should merge all of their money

Each individual should have both separate funds and joint funds

The individual with a higher income should have some of his/her own funds, contribute to the joint fund, and give the other person some extra money

The individual with a higher income should have some of his/her own funds, but contribute more to the joint fund

Each individual should maintain separate funds

other

The couple should merge all of their money

Each individual should have both separate funds and joint funds

The individual with a higher income should have some of his/her own funds, contribute to the joint fund, and give the other person some extra money

The individual with a higher income should have some of his/her own funds, but contribute more to the joint fund

Each individual should maintain separate funds

other