NameError: name is not defined

[SnekLover123]

I'm really new to python. Can someone help me figure out what's wrong with my crappy game? It says NameError: name 'DSC' is not defined on line 55 in main.py

import time
import os

name = raw_input("""Hello, welcome to Snek World.
You are a snek what is your name? """)
time.sleep(1)
print 'Hi, %s Welcome to Snek World' % name
time.sleep(2)

# Pick a Biome

print """Here in Snek World we have tons of
different biomes! Pick where you want to live. (Sneks vary in each biome.)
1. Desert
2. Rainforest
3. Plains
"""
biome = int(raw_input())
time.sleep(2)
os.system('cls')

# Desert Snakes (DSC = Desert snake choice)

if biome == 1:
    DSC = raw_input("""Good choice! There are lots of sneks from the
desert! (Pick which snek you want to be)
1. Kenyan Sand Boa
2. Cobra
3. California King Snake
""")

# Rainforest snakes (RSC Rainforest snek choice)

elif biome == 2:
    RSC = input("""Good choice! There are lots of sneks from the
rainforest! (Pick which snek you want to be)
1. Tri-color hognose
2. Rainbow Boa
3. Bush Viper
""")

# Plains (PSC Plains snek choice)

elif biome == 3:
    PSC = input("""Good choice! There are lots of sneks from the
plains! (Pick which snek you want to be)
1. Hognose snake
2. Diamondback rattlesnake
3. Rat snake
""")

# DSC

if DSC == 1:
    print '%s the Kenyan sand boa, I like it!' % name
if DSC == 2:
    print '%s the Cobra, I like it!' % name
if DSC == 3:
    print '%s the California king snake, I like it!' % name

# RSC

if RSC == 1:
    print '%s the Tri-color hognose, I like it!' % name
if RSC == 2:
    print '%s the Rainbow boa, I like it!' % name
if RSC == 3:
    print '%s the Bush viper, I like it!' % name

# PSC

if PSC == 1:
    print '%s the Hognose snake, I like it!' % name
if PSC == 2:
    print '%s the Diamondback rattlesnake, I like it!' % name
if PSC == 3:
    print '%s the Rat snake, I like it!' % name