The correct option is D A-(ii), B-(iii), C-(iv), D-(i)
Pusa Komal is a cowpea variety resistant to bacterial blight. Cowpea is a leguminous plant which is affected by the bacterium Xanthomonas. Infection is recognised by necrotic lesions (lesions caused due to dead tissues) on leaves.
Himgiri is a wheat variety which is resistant to leaf and stripe rust and hill bunt. Both diseases are caused by fungus. Leaf stripe rust in wheat is represented by yellow stripes on wheat. The hill bunt is an infection in which fungus attacks the seedling of wheat and grows along the tip of the shoot.
Pusa Swarnim is a resistant variety of Brassica against white rust. This is a fungal infection caused by Albugo candida. Symptoms are white blister-like growth on leaves.
Parbhani kranti is a variety of okra (lady's finger) which is resistant to yellow mosaic virus.