Pizza weight at Crusty's pizza follows a binomial distribution with a problem of 0.15 that a pizza is overweight (i.e., too much cheese and/or toppings were put on the pizza). A random sample of 18 pizza's is taken.

What is the probability of at least 2 being overweight?

1. 0.17
2. 0.52
3. 0.38
4. 0.76