Triploid species of Citrus is

Answer: Option C

The triploid species of Citrus is Citrus latifolia.
It is also known by other common names such as seedless lime, Bearss lime and Tahiti lime. It is a citrus fruit species of hybrid origin, known only in cultivation. The Persian lime is a triploid cross between key lime (Citrus × aurantiifolia) and lemon (Citrus × limon).
The fruit turns yellow as it ripens, but it is universally sold while still green. It is larger, thicker-skinned, with less intense citrus aromatics than the key lime.