In a particular coding scheme MANGO is written as 50 and GUAVA is written as 52. In the same scheme, BANANA will be written as

MANGO → 50
GUAVA → 52

Logic:
The code is based on the sum of alphabetical positions of the letters.

MANGO
M(13) + A(1) + N(14) + G(7) + O(15) = 50

GUAVA
G(7) + U(21) + A(1) + V(22) + A(1) = 52

BANANA
B(2) + A(1) + N(14) + A(1) + N(14) + A(1) = 33

Thus, correct option is (c).