In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, then

• A

  75 per cent will be tall with red fruit

• B

  All the offspring will be tall with red fruit

• C

  25 per cent will be tall with red fruit

• D

  50 per cent will be tall with red fruit