In plants,red fruit $(R)$ is dominant over yellow fruit $(r)$ and tall height $(T)$ is dominant over dwarf height $(t)$. If a plant with genotype $RRTt$ is crossed with a plant with genotype $RRTt$,what will be the phenotype of the offspring?

• A
  $75\%$ will be tall and red-fruited.
• B
  $50\%$ will be tall and red-fruited.
• C
  $25\%$ will be tall and red-fruited.
• D
  All offspring will be tall and red-fruited.