In Peas, Tall (T)is Dominant to Short (T), Red Flowers

Multiple Choice

In peas, tall (T) is dominant to short (t) , red flowers (R) is dominant to white flowers (r) , and wide leaves (W) is dominant to narrow leaves (w) .A tall plant that has red flowers and wide leaves is crossed to a short plant that has white flowers and narrow leaves.The resulting progeny are shown in the table.
$\begin{array}{|l|r|}\hline \text { tall, red, wide } & 381 \\\hline \text { tall, white, wide } & 122 \\\hline \text { short, red, wide } & 118 \\\hline \text { short, white, wide } & 379 \\\hline & 1000 \\\hline\end{array}$
-This cross is not useful to determine if one of the genes is linked to the others.Which gene?

A) gene T
B) gene R
C) gene W
D) This cross shows that all three genes are linked.