For UTF$-8$ code:

$11110100101001101010110010111100$

specify the shortest alternative UTF$-8$ code, in which two leading zeros $(00)$ are obligatory in the information part of the code before the first $1.$

a$.$

$1111100010000100101001101010110010111100$

b$.$

$111111001000000010000100101001101010110010111100$

c$.$

$1111100110000100101001101010110010111100$

d$.$

$111111011000000010000100101001101010110010111100$