The First Step in the Ostwald Process for Producing Nitric $\rarr$

Multiple Choice

The first step in the Ostwald process for producing nitric acid is 4NH₃(g) + 5O₂(g) $\rarr$ 4NO(g) + 6H₂O(g) .If the reaction of 150. g of ammonia with 150. g of oxygen gas yields 87. g of nitric oxide (NO) , what is the percent yield of this reaction

A) 33%
B) 49%
C) 62%
D) 77%
E) 100%