Concept:
Different fruit crops require different duration from flowering to harvest. Small fruits mature faster, while perennial crops like coconut require longer duration.
Step 1: Fastest maturing fruit.
Strawberry takes comparatively less time from flowering to harvesting.
\[
C=\text{Strawberry}
\]
Step 2: Next fruit.
Litchi takes more time than strawberry but less than banana, guava and coconut.
\[
A=\text{Litchi}
\]
Step 3: Banana and guava.
Banana and guava take longer duration than litchi.
\[
D=\text{Banana}, \quad E=\text{Guava}
\]
Step 4: Longest duration.
Coconut takes the maximum time from flowering to harvesting.
\[
B=\text{Coconut}
\]
Thus, increasing order is:
\[
C,A,D,E,B
\]
\[
\therefore \text{Correct Answer is (C)}
\]