Which of the following details about Hitchcock is INCORRECT?

Alfred Hitchcock is one of the best known film-makers, and because of his habit of making a quick appearances in each of his films ever since the 1930s, his face is easily recognized. Cinema audiences all over the world have come to connect (18) the gentle-looking , overweight Englishman with some of the most mysterious and frightening films ever made.
    Alfred Hitchcock was the son of an East London shopkeeper. He had a strict Catholic education and went to several strict schools. He was a quiet boy. an average student who kept himself to himself. When he left school at fourteen, he began to be trained as an engineer. He had always been an enthusiastic theatre lover and (19)by sixteen he became interested in the cinema too. About this time he found he also had a talent for drawing, and he went to a course in drawing at London University—at first it was to help him in his job. But as young Hitchcock’s career developed, so did his interest in the arts and with his drawing talent came an interest in writing. (20) His first written work was in The Henley, the magazine of his company. This led to another change in the direction of his career, as he found himself writing the advertising for the company. This was the first time Hitchcock had been asked to use his imagination, and for the first time he started to experiment with characters and stories.