Which of the following statements about excess contributions is correct? Excess contributions and earnings thereon that are carried forward are subject to the 6% excise tax in every year that they are labeled excess contributions at year-end. O A. O B. Excess contributions may be carried back or carried forward. Excess contributions that are carried forward are subject to the 6% excise tax in every year that they are labeled excess contributions at year-end. C. Excess contributions that are carried forward are subject to the 6% excise tax only in the first year that they are labeled excess contributions O D