Segmentation: 1. In some animals the body is externally, but not internally divided into segments with a serial repetition. 2. The phenomenon is known as metamerism. 3. Earthworm shows this pattern called metameric segmentation. Regarding 1,2 and 3:

Question

( a ) 1 is correct but 2 and 3 are incorrect
( b ) 3 is incorrect but 1 and 2 are correct
( c ) 2 is incorrect but 1 and 3 are correct
( d ) 1 is incorrect but 2 and 3 are correct